first version of the touch API
tried with a real ipad, but it doesnt work yet
added example data
touch interface is starting to shape up. But now the test suite is broken :(
merged with master. removed cascading error-provoking tests
merged with master
renamed the tween options to every and after
added fingers demo
make graphics.clear() impervious to alpha
fingers has now more documentation
added luv.touch.isSupported
Merge branch 'touch'