Groundwork for using npm scripts (#31)

* npm test

* preversion hook

* Remove $ from commands for easier copy and paste

* prefer running via npm

README.md

@@ -150,16 +150,16 @@ jQuery.extend(verge)
 
 
 ```sh
-$ ender build verge
+ender build verge
 ```
 
 ## Contribute
 
 Contribute by making edits in [`/src`](./src) or reporting [issues](../../issues).
 
 ```sh
-$ npm install
-$ grunt jshint:src
+npm install
+npm test
 ```
 
 ## Fund

package.json

@@ -8,14 +8,18 @@
   "keywords": ["viewport", "dimensions", "responsive", "media queries", "ender"],
   "main": "./verge.js",
   "ender": "./src/ender.js",
+  "scripts": {
+    "preversion": "npm test",
+    "test": "grunt jshint:src"
+  },
   "repository": {
     "type": "git",
     "url": "https://github.com/ryanve/verge.git"
-  }, 
+  },
   "devDependencies": {
     "grunt": "~0.4.2",
     "grunt-contrib-uglify": "~0.3.0",
     "grunt-contrib-concat": "~0.3.0",
     "grunt-contrib-jshint": "~0.8.0"
   }
-}
+}