deleted onRotate

confusing function which can be more clearly and easily replicated by
accessing the rotation property directly
renamed example pages with new function names
refactored paprika

changed onPropertyUpdate to bindProperty
merged onDisappear into onAppear (boolean value in callback data)
onOrient also callbacks when exiting orientation zone (boolean value in
callback data)
updated demos with new paprika function calls
fixes to bundletags example
updated index with project info and links

based on index from gh-pages
updated phaser demos 1 and 2

added background music, added sound to and fixed orientation of demo 1