Items and drops
	--Made a class for items
	--Made a subclass for gold
	--Ghosts now drop gold
	--Player can collect the gold
 Changes to be committed:
	modified:   com/reapersrage/entities/items/GoldPiece.java
	modified:   com/reapersrage/entities/items/Item.java
	modified:   com/reapersrage/entities/mobs/Mob.java
	modified:   com/reapersrage/entities/mobs/Player.java
	modified:   com/reapersrage/game/Game.java
	new file:   com/reapersrage/res/textures/gold.png
	modified:   com/reapersrage/world/level/Level.java
	modified:   com/reapersrage/world/level/RandomLevel.java