- Added Goal Entity, reaching this block ends the level(at the Moments the Credits Gamestate is called)
- Entities now have the bool solid, which is used in the players onCollision method
- closed doors now block the player
Merge branch 'master' of https://github.com/fuerchter/Replica

Conflicts:
	Replica/Replica/Entities/Block.cs
	Replica/Replica/Entities/Blocks/Door.cs
	Replica/Replica/Entity.cs
	Replica/Replica/Game1.cs
merging sucks