- Added some ugly square rock

- Fixed a "bug" where 4 sided polygons wouldn't fill completely the square.
- Created switches

- Created property fields with gravityx and gravityy properties
- Renamed some levels
Merge branch 'master' of github.com:mauriciozaragoza/swap

Conflicts:
	src/org/dinosaurriders/swap/LevelContainer.as
	src/org/dinosaurriders/swap/objects/Player.as
Reworked some collision identifications

Now all bodies are grouped in worldGroup
All tiles now have their own class
Tiles can now kill the player with the 'kills' property
Fixed some issues with propertyfields