Code Cleanup

API change for LeapElement.
element.element changed to element.dom
element.getElement() changed to element.getDom()

Clean up to cursor event dispatching calls.

Updates ot Sencha Touch CDN

Update to examples to use leapmanager-min not src.
Added useHands config which switches cursors from fingers to palms.
Added Grab event when useHands is enabled.
Added Basic hand demo
Added Basic Grab/Drag Demo
Renamed basic usage example