diff --git a/base64-img.js b/base64-img.js
index 10bb7c3..aeff99e 100644
--- a/base64-img.js
+++ b/base64-img.js
@@ -5,7 +5,7 @@ var request = require('ajax-request');
 function base64(filename, data) {
   var extname = path.extname(filename).substr(1);
   extname = extname || 'png';
-  
+
   return 'data:image/' + extname + ';base64,' + data.toString('base64');
 }
 
@@ -28,16 +28,56 @@ function img(data) {
   };
 }
 
+function base64Promise(filename) {
+  return new Promise((resolve, reject) => {
+    fs.readFile(filename, function (err, data) {
+      if (err) reject(err);
+
+      resolve(base64(filename, data));
+    });
+  });
+};
+
+function requestBase64Promise(url) {
+  return new Promise((resolve, reject) => {
+    request({
+      url: url,
+      isBuffer: true
+    }, function (err, res, body) {
+      if (err) return reject(err);
+
+      var data = 'data:' + res.headers['content-type'] + ';base64,' + body.toString('base64');
+      resolve({ res, data });
+    });
+  });
+};
+
+function imgPromise(data, destpath, name) {
+  return new Promise((resolve, reject) => {
+    var result = img(data);
+    var filepath = path.join(destpath, name + result.extname);
+
+    fs.writeFile(filepath, result.base64, { encoding: 'base64' }, function (err) {
+      if (err) return reject(err);
+      resolve(filepath);
+    });
+  });
+};
+
 /**
  * @description
  * Get image file base64 data
  * @example
  * base64Img.base64('path/demo.png', function(err, data) {})
+ * @example
+ * base64Img.base64('path/demo.png').then(function(data) {
+ * 
+ * });
  */
-exports.base64 = function(filename, callback) {
-  if (!callback) callback = util.noop;
+exports.base64 = function (filename, callback) {
+  if (!callback) return base64Promise(filename);
 
-  fs.readFile(filename, function(err, data) {
+  fs.readFile(filename, function (err, data) {
     if (err) return callback(err);
 
     callback(null, base64(filename, data));
@@ -50,7 +90,7 @@ exports.base64 = function(filename, callback) {
  * @example
  * var data = base64Img.base64Sync('path/demo.png');
  */
-exports.base64Sync = function(filename) {
+exports.base64Sync = function (filename) {
   var data = fs.readFileSync(filename);
 
   return base64(filename, data);
@@ -66,8 +106,16 @@ exports.base64Sync = function(filename) {
  * 
  *   }
  * );
+ * @example
+ * request.base64(
+ *   'http://webresource.c-ctrip.com/ResCRMOnline/R5/html5/images/57.png',
+ * ).then(function({res, data}) {
+ * 
+ * });
  */
-exports.requestBase64 = function(url, callback) {
+exports.requestBase64 = function (url, callback) {
+  if (!callback) return requestBase64Promise(url);
+
   request({
     url: url,
     isBuffer: true
@@ -84,12 +132,16 @@ exports.requestBase64 = function(url, callback) {
  * Convert image base64 data to img
  * @example
  * base64Img.img('data:image/png;base64,...', 'dest', '1', function(err, filepath) {});
+ * @example
+ * base64Img.img('data:image/png;base64,...', 'dest', '1').then(function(filepath) {});
  */
-exports.img = function(data, destpath, name, callback) {
+exports.img = function (data, destpath, name, callback) {
+  if (!callback) return imgPromise(data, destpath, name);
+
   var result = img(data);
   var filepath = path.join(destpath, name + result.extname);
 
-  fs.writeFile(filepath, result.base64, { encoding: 'base64' }, function(err) {
+  fs.writeFile(filepath, result.base64, { encoding: 'base64' }, function (err) {
     callback(err, filepath);
   });
 };
@@ -100,7 +152,7 @@ exports.img = function(data, destpath, name, callback) {
  * @example
  * var filepath = base64Img.imgSync('data:image/png;base64,...', 'dest', '1');
  */
-exports.imgSync = function(data, destpath, name) {
+exports.imgSync = function (data, destpath, name) {
   var result = img(data);
   var filepath = path.join(destpath, name + result.extname);
 
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..0efd999
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,559 @@
+{
+  "name": "base64-img",
+  "version": "1.0.3",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "abbrev": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
+      "integrity": "sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==",
+      "dev": true
+    },
+    "ajax-request": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/ajax-request/-/ajax-request-1.2.3.tgz",
+      "integrity": "sha1-mfy+wdbSeS+F+pSVNTMr0U9fN5A=",
+      "requires": {
+        "file-system": "2.2.2",
+        "utils-extend": "1.0.8"
+      }
+    },
+    "argparse": {
+      "version": "0.1.16",
+      "resolved": "https://registry.npmjs.org/argparse/-/argparse-0.1.16.tgz",
+      "integrity": "sha1-z9AeD7uj1srtBJ+9dY1A9lGW9Xw=",
+      "dev": true,
+      "requires": {
+        "underscore": "1.7.0",
+        "underscore.string": "2.4.0"
+      },
+      "dependencies": {
+        "underscore.string": {
+          "version": "2.4.0",
+          "resolved": "https://registry.npmjs.org/underscore.string/-/underscore.string-2.4.0.tgz",
+          "integrity": "sha1-jN2PusTi0uoefi6Al8QvRCKA+Fs=",
+          "dev": true
+        }
+      }
+    },
+    "async": {
+      "version": "0.1.22",
+      "resolved": "https://registry.npmjs.org/async/-/async-0.1.22.tgz",
+      "integrity": "sha1-D8GqoIig4+8Ovi2IMbqw3PiEUGE=",
+      "dev": true
+    },
+    "cli": {
+      "version": "0.6.6",
+      "resolved": "https://registry.npmjs.org/cli/-/cli-0.6.6.tgz",
+      "integrity": "sha1-Aq1Eo4Cr8nraxebwzdewQ9dMU+M=",
+      "dev": true,
+      "requires": {
+        "exit": "0.1.2",
+        "glob": "3.2.11"
+      },
+      "dependencies": {
+        "glob": {
+          "version": "3.2.11",
+          "resolved": "https://registry.npmjs.org/glob/-/glob-3.2.11.tgz",
+          "integrity": "sha1-Spc/Y1uRkPcV0QmH1cAP0oFevj0=",
+          "dev": true,
+          "requires": {
+            "inherits": "2.0.3",
+            "minimatch": "0.3.0"
+          }
+        },
+        "minimatch": {
+          "version": "0.3.0",
+          "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-0.3.0.tgz",
+          "integrity": "sha1-J12O2qxPG7MyZHIInnlJyDlGmd0=",
+          "dev": true,
+          "requires": {
+            "lru-cache": "2.7.3",
+            "sigmund": "1.0.1"
+          }
+        }
+      }
+    },
+    "coffee-script": {
+      "version": "1.3.3",
+      "resolved": "https://registry.npmjs.org/coffee-script/-/coffee-script-1.3.3.tgz",
+      "integrity": "sha1-FQ1rTLUiiUNp7+1qIQHCC8f0pPQ=",
+      "dev": true
+    },
+    "colors": {
+      "version": "0.6.2",
+      "resolved": "https://registry.npmjs.org/colors/-/colors-0.6.2.tgz",
+      "integrity": "sha1-JCP+ZnisDF2uiFLl0OW+CMmXq8w=",
+      "dev": true
+    },
+    "console-browserify": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/console-browserify/-/console-browserify-1.1.0.tgz",
+      "integrity": "sha1-8CQcRXMKn8YyOyBtvzjtx0HQuxA=",
+      "dev": true,
+      "requires": {
+        "date-now": "0.1.4"
+      }
+    },
+    "core-util-is": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
+      "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
+      "dev": true
+    },
+    "date-now": {
+      "version": "0.1.4",
+      "resolved": "https://registry.npmjs.org/date-now/-/date-now-0.1.4.tgz",
+      "integrity": "sha1-6vQ5/U1ISK105cx9vvIAZyueNFs=",
+      "dev": true
+    },
+    "dateformat": {
+      "version": "1.0.2-1.2.3",
+      "resolved": "https://registry.npmjs.org/dateformat/-/dateformat-1.0.2-1.2.3.tgz",
+      "integrity": "sha1-sCIMAt6YYXQztyhRz0fePfLNvuk=",
+      "dev": true
+    },
+    "dom-serializer": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/dom-serializer/-/dom-serializer-0.1.0.tgz",
+      "integrity": "sha1-BzxpdUbOB4DOI75KKOKT5AvDDII=",
+      "dev": true,
+      "requires": {
+        "domelementtype": "1.1.3",
+        "entities": "1.1.1"
+      },
+      "dependencies": {
+        "domelementtype": {
+          "version": "1.1.3",
+          "resolved": "https://registry.npmjs.org/domelementtype/-/domelementtype-1.1.3.tgz",
+          "integrity": "sha1-vSh3PiZCiBrsUVRJJCmcXNgiGFs=",
+          "dev": true
+        },
+        "entities": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/entities/-/entities-1.1.1.tgz",
+          "integrity": "sha1-blwtClYhtdra7O+AuQ7ftc13cvA=",
+          "dev": true
+        }
+      }
+    },
+    "domelementtype": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/domelementtype/-/domelementtype-1.3.0.tgz",
+      "integrity": "sha1-sXrtguirWeUt2cGbF1bg/BhyBMI=",
+      "dev": true
+    },
+    "domhandler": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/domhandler/-/domhandler-2.3.0.tgz",
+      "integrity": "sha1-LeWaCCLVAn+r/28DLCsloqir5zg=",
+      "dev": true,
+      "requires": {
+        "domelementtype": "1.3.0"
+      }
+    },
+    "domutils": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/domutils/-/domutils-1.5.1.tgz",
+      "integrity": "sha1-3NhIiib1Y9YQeeSMn3t+Mjc2gs8=",
+      "dev": true,
+      "requires": {
+        "dom-serializer": "0.1.0",
+        "domelementtype": "1.3.0"
+      }
+    },
+    "entities": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/entities/-/entities-1.0.0.tgz",
+      "integrity": "sha1-sph6o4ITR/zeZCsk/fyeT7cSvyY=",
+      "dev": true
+    },
+    "esprima": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/esprima/-/esprima-1.0.4.tgz",
+      "integrity": "sha1-n1V+CPw7TSbs6d00+Pv0drYlha0=",
+      "dev": true
+    },
+    "eventemitter2": {
+      "version": "0.4.14",
+      "resolved": "https://registry.npmjs.org/eventemitter2/-/eventemitter2-0.4.14.tgz",
+      "integrity": "sha1-j2G3XN4BKy6esoTUVFWDtWQ7Yas=",
+      "dev": true
+    },
+    "exit": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/exit/-/exit-0.1.2.tgz",
+      "integrity": "sha1-BjJjj42HfMghB9MKD/8aF8uhzQw=",
+      "dev": true
+    },
+    "file-match": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/file-match/-/file-match-1.0.2.tgz",
+      "integrity": "sha1-ycrSZdLIrfOoFHWw30dYWQafrvc=",
+      "requires": {
+        "utils-extend": "1.0.8"
+      }
+    },
+    "file-system": {
+      "version": "2.2.2",
+      "resolved": "https://registry.npmjs.org/file-system/-/file-system-2.2.2.tgz",
+      "integrity": "sha1-fWWDPjojR9zZVqgTxncVPtPt2Yc=",
+      "requires": {
+        "file-match": "1.0.2",
+        "utils-extend": "1.0.8"
+      }
+    },
+    "findup-sync": {
+      "version": "0.1.3",
+      "resolved": "https://registry.npmjs.org/findup-sync/-/findup-sync-0.1.3.tgz",
+      "integrity": "sha1-fz56l7gjksZTvwZYm9hRkOk8NoM=",
+      "dev": true,
+      "requires": {
+        "glob": "3.2.11",
+        "lodash": "2.4.2"
+      },
+      "dependencies": {
+        "glob": {
+          "version": "3.2.11",
+          "resolved": "https://registry.npmjs.org/glob/-/glob-3.2.11.tgz",
+          "integrity": "sha1-Spc/Y1uRkPcV0QmH1cAP0oFevj0=",
+          "dev": true,
+          "requires": {
+            "inherits": "2.0.3",
+            "minimatch": "0.3.0"
+          }
+        },
+        "lodash": {
+          "version": "2.4.2",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-2.4.2.tgz",
+          "integrity": "sha1-+t2DS5aDBz2hebPq5tnA0VBT9z4=",
+          "dev": true
+        },
+        "minimatch": {
+          "version": "0.3.0",
+          "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-0.3.0.tgz",
+          "integrity": "sha1-J12O2qxPG7MyZHIInnlJyDlGmd0=",
+          "dev": true,
+          "requires": {
+            "lru-cache": "2.7.3",
+            "sigmund": "1.0.1"
+          }
+        }
+      }
+    },
+    "getobject": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/getobject/-/getobject-0.1.0.tgz",
+      "integrity": "sha1-BHpEl4n6Fg0Bj1SG7ZEyC27HiFw=",
+      "dev": true
+    },
+    "glob": {
+      "version": "3.1.21",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-3.1.21.tgz",
+      "integrity": "sha1-0p4KBV3qUTj00H7UDomC6DwgZs0=",
+      "dev": true,
+      "requires": {
+        "graceful-fs": "1.2.3",
+        "inherits": "1.0.2",
+        "minimatch": "0.2.14"
+      },
+      "dependencies": {
+        "inherits": {
+          "version": "1.0.2",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-1.0.2.tgz",
+          "integrity": "sha1-ykMJ2t7mtUzAuNJH6NfHoJdb3Js=",
+          "dev": true
+        }
+      }
+    },
+    "graceful-fs": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-1.2.3.tgz",
+      "integrity": "sha1-FaSAaldUfLLS2/J/QuiajDRRs2Q=",
+      "dev": true
+    },
+    "grunt": {
+      "version": "0.4.5",
+      "resolved": "https://registry.npmjs.org/grunt/-/grunt-0.4.5.tgz",
+      "integrity": "sha1-VpN81RlDJK3/bSB2MYMqnWuk5/A=",
+      "dev": true,
+      "requires": {
+        "async": "0.1.22",
+        "coffee-script": "1.3.3",
+        "colors": "0.6.2",
+        "dateformat": "1.0.2-1.2.3",
+        "eventemitter2": "0.4.14",
+        "exit": "0.1.2",
+        "findup-sync": "0.1.3",
+        "getobject": "0.1.0",
+        "glob": "3.1.21",
+        "grunt-legacy-log": "0.1.3",
+        "grunt-legacy-util": "0.2.0",
+        "hooker": "0.2.3",
+        "iconv-lite": "0.2.11",
+        "js-yaml": "2.0.5",
+        "lodash": "0.9.2",
+        "minimatch": "0.2.14",
+        "nopt": "1.0.10",
+        "rimraf": "2.2.8",
+        "underscore.string": "2.2.1",
+        "which": "1.0.9"
+      }
+    },
+    "grunt-contrib-jshint": {
+      "version": "0.10.0",
+      "resolved": "https://registry.npmjs.org/grunt-contrib-jshint/-/grunt-contrib-jshint-0.10.0.tgz",
+      "integrity": "sha1-V+vMyofo8yevZkXYo8WG1IReTYE=",
+      "dev": true,
+      "requires": {
+        "hooker": "0.2.3",
+        "jshint": "2.5.11"
+      }
+    },
+    "grunt-legacy-log": {
+      "version": "0.1.3",
+      "resolved": "https://registry.npmjs.org/grunt-legacy-log/-/grunt-legacy-log-0.1.3.tgz",
+      "integrity": "sha1-7ClCboAwIa9ZAp+H0vnNczWgVTE=",
+      "dev": true,
+      "requires": {
+        "colors": "0.6.2",
+        "grunt-legacy-log-utils": "0.1.1",
+        "hooker": "0.2.3",
+        "lodash": "2.4.2",
+        "underscore.string": "2.3.3"
+      },
+      "dependencies": {
+        "lodash": {
+          "version": "2.4.2",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-2.4.2.tgz",
+          "integrity": "sha1-+t2DS5aDBz2hebPq5tnA0VBT9z4=",
+          "dev": true
+        },
+        "underscore.string": {
+          "version": "2.3.3",
+          "resolved": "https://registry.npmjs.org/underscore.string/-/underscore.string-2.3.3.tgz",
+          "integrity": "sha1-ccCL9rQosRM/N+ePo6Icgvcymw0=",
+          "dev": true
+        }
+      }
+    },
+    "grunt-legacy-log-utils": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/grunt-legacy-log-utils/-/grunt-legacy-log-utils-0.1.1.tgz",
+      "integrity": "sha1-wHBrndkGThFvNvI/5OawSGcsD34=",
+      "dev": true,
+      "requires": {
+        "colors": "0.6.2",
+        "lodash": "2.4.2",
+        "underscore.string": "2.3.3"
+      },
+      "dependencies": {
+        "lodash": {
+          "version": "2.4.2",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-2.4.2.tgz",
+          "integrity": "sha1-+t2DS5aDBz2hebPq5tnA0VBT9z4=",
+          "dev": true
+        },
+        "underscore.string": {
+          "version": "2.3.3",
+          "resolved": "https://registry.npmjs.org/underscore.string/-/underscore.string-2.3.3.tgz",
+          "integrity": "sha1-ccCL9rQosRM/N+ePo6Icgvcymw0=",
+          "dev": true
+        }
+      }
+    },
+    "grunt-legacy-util": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/grunt-legacy-util/-/grunt-legacy-util-0.2.0.tgz",
+      "integrity": "sha1-kzJIhNv343qf98Am3/RR2UqeVUs=",
+      "dev": true,
+      "requires": {
+        "async": "0.1.22",
+        "exit": "0.1.2",
+        "getobject": "0.1.0",
+        "hooker": "0.2.3",
+        "lodash": "0.9.2",
+        "underscore.string": "2.2.1",
+        "which": "1.0.9"
+      }
+    },
+    "hooker": {
+      "version": "0.2.3",
+      "resolved": "https://registry.npmjs.org/hooker/-/hooker-0.2.3.tgz",
+      "integrity": "sha1-uDT3I8xKJCqmWWNFnfbZhMXT2Vk=",
+      "dev": true
+    },
+    "htmlparser2": {
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/htmlparser2/-/htmlparser2-3.8.3.tgz",
+      "integrity": "sha1-mWwosZFRaovoZQGn15dX5ccMEGg=",
+      "dev": true,
+      "requires": {
+        "domelementtype": "1.3.0",
+        "domhandler": "2.3.0",
+        "domutils": "1.5.1",
+        "entities": "1.0.0",
+        "readable-stream": "1.1.14"
+      }
+    },
+    "iconv-lite": {
+      "version": "0.2.11",
+      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.2.11.tgz",
+      "integrity": "sha1-HOYKOleGSiktEyH/RgnKS7llrcg=",
+      "dev": true
+    },
+    "inherits": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+      "dev": true
+    },
+    "isarray": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/isarray/-/isarray-0.0.1.tgz",
+      "integrity": "sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8=",
+      "dev": true
+    },
+    "js-yaml": {
+      "version": "2.0.5",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-2.0.5.tgz",
+      "integrity": "sha1-olrmUJmZ6X3yeMZxnaEb0Gh3Q6g=",
+      "dev": true,
+      "requires": {
+        "argparse": "0.1.16",
+        "esprima": "1.0.4"
+      }
+    },
+    "jshint": {
+      "version": "2.5.11",
+      "resolved": "https://registry.npmjs.org/jshint/-/jshint-2.5.11.tgz",
+      "integrity": "sha1-4tlYWLuxqngwAQii6BCZ+wlWIuA=",
+      "dev": true,
+      "requires": {
+        "cli": "0.6.6",
+        "console-browserify": "1.1.0",
+        "exit": "0.1.2",
+        "htmlparser2": "3.8.3",
+        "minimatch": "1.0.0",
+        "shelljs": "0.3.0",
+        "strip-json-comments": "1.0.4",
+        "underscore": "1.6.0"
+      },
+      "dependencies": {
+        "minimatch": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-1.0.0.tgz",
+          "integrity": "sha1-4N0hILSeG3JM6NcUxSCCKpQ4V20=",
+          "dev": true,
+          "requires": {
+            "lru-cache": "2.7.3",
+            "sigmund": "1.0.1"
+          }
+        },
+        "underscore": {
+          "version": "1.6.0",
+          "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.6.0.tgz",
+          "integrity": "sha1-izixDKze9jM3uLJOT/htRa6lKag=",
+          "dev": true
+        }
+      }
+    },
+    "lodash": {
+      "version": "0.9.2",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-0.9.2.tgz",
+      "integrity": "sha1-jzSZxSRdNG1oLlsNO0B2fgnxqSw=",
+      "dev": true
+    },
+    "lru-cache": {
+      "version": "2.7.3",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-2.7.3.tgz",
+      "integrity": "sha1-bUUk6LlV+V1PW1iFHOId1y+06VI=",
+      "dev": true
+    },
+    "minimatch": {
+      "version": "0.2.14",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-0.2.14.tgz",
+      "integrity": "sha1-x054BXT2PG+aCQ6Q775u9TpqdWo=",
+      "dev": true,
+      "requires": {
+        "lru-cache": "2.7.3",
+        "sigmund": "1.0.1"
+      }
+    },
+    "nopt": {
+      "version": "1.0.10",
+      "resolved": "https://registry.npmjs.org/nopt/-/nopt-1.0.10.tgz",
+      "integrity": "sha1-bd0hvSoxQXuScn3Vhfim83YI6+4=",
+      "dev": true,
+      "requires": {
+        "abbrev": "1.1.1"
+      }
+    },
+    "readable-stream": {
+      "version": "1.1.14",
+      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
+      "integrity": "sha1-fPTFTvZI44EwhMY23SB54WbAgdk=",
+      "dev": true,
+      "requires": {
+        "core-util-is": "1.0.2",
+        "inherits": "2.0.3",
+        "isarray": "0.0.1",
+        "string_decoder": "0.10.31"
+      }
+    },
+    "rimraf": {
+      "version": "2.2.8",
+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.2.8.tgz",
+      "integrity": "sha1-5Dm+Kq7jJzIZUnMPmaiSnk/FBYI=",
+      "dev": true
+    },
+    "shelljs": {
+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/shelljs/-/shelljs-0.3.0.tgz",
+      "integrity": "sha1-NZbmMHp4FUT1kfN9phg2DzHbV7E=",
+      "dev": true
+    },
+    "sigmund": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/sigmund/-/sigmund-1.0.1.tgz",
+      "integrity": "sha1-P/IfGYytIXX587eBhT/ZTQ0ZtZA=",
+      "dev": true
+    },
+    "string_decoder": {
+      "version": "0.10.31",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+      "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
+      "dev": true
+    },
+    "strip-json-comments": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-1.0.4.tgz",
+      "integrity": "sha1-HhX7ysl9Pumb8tc7TGVrCCu6+5E=",
+      "dev": true
+    },
+    "underscore": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.7.0.tgz",
+      "integrity": "sha1-a7rwh3UA02vjTsqlhODbn+8DUgk=",
+      "dev": true
+    },
+    "underscore.string": {
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/underscore.string/-/underscore.string-2.2.1.tgz",
+      "integrity": "sha1-18D6KvXVoaZ/QlPa7pgTLnM/Dxk=",
+      "dev": true
+    },
+    "utils-extend": {
+      "version": "1.0.8",
+      "resolved": "https://registry.npmjs.org/utils-extend/-/utils-extend-1.0.8.tgz",
+      "integrity": "sha1-zP17ZFQPjpDuIe7Fd2nQZRyril8="
+    },
+    "which": {
+      "version": "1.0.9",
+      "resolved": "https://registry.npmjs.org/which/-/which-1.0.9.tgz",
+      "integrity": "sha1-RgwdoPgQED0DIam2M6+eV15kSG8=",
+      "dev": true
+    }
+  }
+}