Ryans Kryo update...  +
-Fixed crashing when not even to the edge of the map by adding Tree Pine to the hash map (whoops!)
-Added a "WORLD_SIZE" constant
Broken stuff...
Merge branch 'chris' of https://github.com/rpmadden08/adventure-craft into chris

Conflicts:
	src/com/madbros/adventurecraft/Chunk.java
	src/com/madbros/adventurecraft/Level.java
	src/com/madbros/adventurecraft/SaveGame.java
	src/com/madbros/adventurecraft/Utils/Helpers.java