fix(lib/cli.coffee,package.json): Normalize the "bin" field in "packa…

…ge.json"

Field is treated differently after installation. Originally given as a string, the install converts
it to a map. Changed to use map with named field. Updated CLI to reference the named field.

Fixes #242

lib/cli.coffee

@@ -32,7 +32,7 @@ parseArgs = (argv) ->
   'use strict'
   allOptions = _.assign {}, abaoOptions, mochaOptions
   mochaOptionNames = Object.keys mochaOptions
-  prog = path.basename pkg.bin
+  prog = path.basename pkg.bin.abao
   return yargs(argv)
     .usage("Usage:\n  #{prog} </path/to/raml> [OPTIONS]" +
       "\n\nExample:\n  #{prog} api.raml --server http://api.example.com")

package.json

@@ -2,7 +2,9 @@
   "name": "abao",
   "version": "0.6.0",
   "description": "RAML testing tool",
-  "bin": "bin/abao",
+  "bin": {
+    "abao": "bin/abao"
+  },
   "main": "lib/index.js",
   "scripts": {
     "git-cz": "git-cz",