Changed CollisionRect.java to use Vector2 instead of two indepened ints. Also Constructors.

Added basic Constructors and Functions to Tile.java.

Created GameMap.java which uses a 3D TileList. Added Basics to this
aswell.

2 new assets: 	dirt.png
		missingtxt.png

For now i've chosen 16x16 to be the basic res. Let's see how far this'll
work :)