Added Line.java
Added gestureDetector, gestureListener and onTouchEvent
Write CannonView constructor, and add relevant variables and constants
Added onSizeChanged for CannonView
Added newGame
Added CannonThread and calls for it
Start writing updatePositions
Completed updatePositions except fot 2 TODOs:
 - Show game over dialogs for win and lose cases
Added drawGameElements
Added showGameOverDialog
Add releaseResources and pause stopGame
Merge branch 'CannonView' of github.com:deepcyan/CannonBall into CorrectedCannonView2