Working on projectiles fired by the player.
 Changes to be committed:
	modified:   com/reapersrage/entities/mobs/Ghost.java
	modified:   com/reapersrage/entities/mobs/Mob.java
	modified:   com/reapersrage/entities/mobs/Player.java
	modified:   com/reapersrage/entities/projectiles/Projectile.java
	modified:   com/reapersrage/game/Game.java
	new file:   com/reapersrage/game/VectorMath.java
	modified:   com/reapersrage/input/Buttons.java
	modified:   com/reapersrage/input/Keyboard.java