Added CanvasLoader UI

The Heartcode CanvasLoader is a lightweight JavaScript UI library, which
can be used to create spinners using the HTML5 Canvas object in modern
browsers, or VML in older ones.

Refer to this [page](http://heartcode.robertpataki.com/canvasloader/) for
more.
Merge pull request #267 from luk51000/master

Added CanvasLoader UI Library