3 more things TODO

1)main screen which lists the current high score and has a button Start
Game
	high score should be persisted using sqlite in one simple row one
column table called HIGH_SCORE

2)There are 3 distinct levels which the game rotates
	In the middle of the screen, each level may have different walls 

3)If live count goes to 0, a game over message should be displayed for 3
secs after which main screen should return to