Ball/Paddle Collision amendments + paddle out dist
Multi touch support added for paddles.
Merge branch 'develop' into joel

Conflicts:
	bin/AdvancedPong.apk
	bin/classes.dex
Paddle now moving backwards.
Player score now showing - currently always zero and positioned near top left.
Scores now displaying and updating.
Collision partly implemented.
Debugging collision between paddle and ball.
Now detecting ball to paddle collision correctly.
Temp - correcting velocity.
Veclocity corrected.
Collision improvements. Full screen. Forced landscape.