chore(gulp) upgrade to babel 6

 - update babelify build syntax and process.

gulp-refactor

.babelrc

@@ -0,0 +1,3 @@
+{
+  "presets": ["es2015"]
+}

gulpfile.js

@@ -1,4 +1,4 @@
-require('babel/register');
+require('babel-core/register');
 var gulp, gulpTasks;
 
 gulp = require('gulp');

package.json

@@ -18,24 +18,26 @@
   },
   "homepage": "https://github.com/PhilVargas/js_game_of_afterlife#readme",
   "dependencies": {
-    "browserify": "^11.0.1",
+    "browserify": "^12.0.1",
     "gulp": "^3.9.0",
     "gulp-sass": "^2.0.4",
-    "gulp-uglify": "^1.2.0",
+    "gulp-uglify": "^1.4.2",
     "path": "^0.11.14",
     "vinyl-buffer": "^1.0.0",
     "vinyl-source-stream": "^1.1.0",
     "watchify": "^3.3.1"
   },
   "devDependencies": {
-    "babel": "^5.8.21",
+    "babel-core": "^6.1.21",
     "babel-eslint": "^4.1.1",
-    "babelify": "^6.1.3",
+    "babel-preset-es2015": "^6.1.18",
+    "babel-preset-react": "^6.1.18",
+    "babelify": "^7.2.0",
     "chai": "^3.2.0",
     "chai-changes": "^1.3.4",
     "chai-spies": "^0.7.0",
     "eslint": "^1.3.1",
-    "gulp-babel": "^5.2.0",
+    "gulp-babel": "^6.1.0",
     "mocha": "^2.2.5",
     "mocha-traceur": "^2.1.0",
     "mochify": "^2.13.0",

public/js/gulp/game_of_afterlife.js

@@ -32,22 +32,19 @@ browserifyOptions = {
   fullPaths: true
 };
 
-function buildJs(){
-  let browserBundle, watcher;
+function buildJs(destination){
+  let browserBundle;
 
   browserBundle = browserify(browserifyOptions);
-  browserBundle.transform(babelify);
-  watcher = watchify(browserBundle);
-  watcher.bundle()
+  browserBundle.transform(babelify, {
+    presets: ['es2015']
+  })
+    .bundle()
     .pipe(source('bundle.js'))
     .pipe(buffer())
     .pipe(uglify())
-    .pipe(gulp.dest(paths.build))
-    .on('end', function(){
-      watcher.close();
-    });
+    .pipe(gulp.dest(destination));
 }
-
 function initializeWatcher(bundleToWatch){
   let watcher, updateStart;
 
@@ -98,6 +95,6 @@ module.exports.watch = {
   sass: watchSass
 };
 module.exports.build = {
-  js: buildJs,
+  js: buildJs.bind(null, paths.build),
   sass: buildSass
 };