Add Mocha and Chai JS testing frameworks
Add Chai Spies plugin
Add Mocha tests for Notifications.js
Let Notification show/hide/reveal methods return this in order to chain calls
Extract Util module to its own file
Add tests for Util.js
Minor
Make handleRemote public in XHR adapter
Add tests for XHR Adapter
Let dataType in XHR Adapter be customizable
Add XHR Adapter tests for real remote endpoint