Uploaded an early WIP screenshot.
.gradle
gradle
Added a lamp post sprite.
Now drawing sprites instead of textures.
Deleted GDD because it is in the wiki now.
Created a LightSource class for lighting.
Some reorganizing.

MapObject and Ground now in World package.
Created a primitive multicolored lighting system.

It only supports one source of light at a time though. No idea why ->
Issue #4
Also, this system is still pretty primitive: All light goes through
walls at the moment. This problem is really similar with the field of
vision system: Now the player sees through walls. A line of sight
algorithm should fix both of these -> Issue #5
gradle
Changed default light color to yellowish.
Cropped the screenshot a bit.
Some reorganizing.
Deleted unused imports caused by reorganizing.
Added a list of items and addItem methods.
Added hasObject method.
Added bomb sprite.
Texture to Sprite
Merge branch 'lighting'

Conflicts:
	core/src/wge3/entity/mapobject/BrickWall.java
	core/src/wge3/world/Area.java
	core/src/wge3/world/Ground.java
	core/src/wge3/world/MapObject.java