Add GameViewController
show player on screen
add player controller
add labels to GameViewController
add falling object class
add drop function to falling object
add collision detection
set scoring condtions
spawn multiple falling objects
recommit of issue#9
fix issue #9
update issue#9
create MainMenuViewController
Add function to play button
Add function to play button
Add GameOverViewController
Add saving and loading function for high score
Able to save high scores
update saving conditions
add high score view controller