Changes to score mechanics..

Hitting an enemy ball now removes 5% of the total score (up from 1).
Time limit score decrease has been removed.
Reversed changes to score mechanics after playtest.
Added DynamicsScreen..

GameplayScreen now just a blueprint for levels.
GameplayScreen now places 4 walls outside the level.
GameplayScreen allows the user to use the arrow keys for camera movement.
DynamicsScreen now has it's walls placed.
TODO: Dynamics screen need to adept the spawner for it's level + add portals.
MainMenuScreen now loads DynamicsScreen.
Score starts at 5%.