Scroller

I tried to follow the pattern you guys set for the components. The directive itself is converted to Javascript. I also included a reference into the util,js and added a demo file. The test plunk for converted version is [here](http://plnkr.co/edit/PdyntFihrf3KaqrVX4vN?p=preview)

I am not sure how to test the demo though. I hope that my guess as to how to hook up the datasource service is good enough.

Let me know what I have missed