docs(build/test): Document the process for building from source & running tests

Fixes #251

Author: SomeKittens

CONTRIBUTING.md

@@ -4,7 +4,7 @@ This document describes how to contribute to Batarang
 
 ## Installing from Source
 
-1. Clone the repository: `git clone git://github.com/angular/angularjs-batarang`
+1. Clone the repository: `git clone git@github.com:angular/batarang.git`
 2. Install the npm dependencies `npm install`
 3. Build the inject script: `npm run build`
 4. Navigate to `chrome://extensions` and enable Developer Mode.
@@ -13,6 +13,9 @@ This document describes how to contribute to Batarang
 
 ## Running the tests
 
+- To run the tests once: `npm test`
+- To watch the directory, running tests whenver something is updated: `npm run test:watch`
+
 ## Packaging a release
 
 I (@btford) will do this periodically, but I'm adding these instructions here

package.json

@@ -21,7 +21,8 @@
     "browserify-eep": "^0.3.1"
   },
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1",
+    "test": "karma start --single-run",
+    "test:watch": "karma start",
     "build": "gulp"
   },
   "repository": {