First Commit

Hello
Manifest added
Mouse Input

Clicking spawns a duck.
Transparent ducks
Switched GameLoop method, added FPS counter

GameLoop now uses the new standard RequestAnimationFrame with
browser-specific APIs, FPS counter added
World and Graphics now asynchronous
Fix to previous commit
Fix to FPS counter
Got rid of the lines

They were causing a weird glitch where the whole canvas went black.
First practice attempt at a release
Changed manifest
Mobile Chrome users should see a dramatic increase
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Merge branch 'master' into gh-pages

Conflicts:
	Duck.js
	index.html
	manifest.webapp