Added testing instructions.

Author: Jakobovski

CONTRIBUTING.md

@@ -30,7 +30,16 @@ We are always looking for the quality contributions and will be happy to accept
 
 * Please open all pull requests against the `dev` branch.
 * Please assure that you are submitting quality code, specifically make sure that:
-  * You have accompanying tests and all the tests are passing.
+  * You have accompanying tests and all the tests are passing.  See testing below.
   * Your PR doesn't break the build; check the Travis-CI build status after opening a PR and push corrective commits if anything goes wrong
   * You are using 2 space indentation
-  * Your commits conform to the conventions established [here](https://github.com/ajoslin/conventional-changelog/blob/master/conventions/angular.md)
+  * Your commits conform to the conventions established [here](https://github.com/ajoslin/conventional-changelog/blob/master/conventions/angular.md)
+
+
+## Testing
+To run tests:
+```bash
+$ npm install
+$ bower install
+$ grunt
+```