[FA, VA]{test before code} I4 - Col Det

Simple tests for collision detection with tiles marked as impassable.
[FA, VA]{test after code} I4 - Col Det

Closes #4
Implemented Col Detection (based on
https://bitbucket.org/dermetfan/tiledmapgame/src/2c2bb58438edb0277453ae0a2e784a4dcbfa466d/TiledMapGame/src/net/dermetfan/tiledMapGame/entities/Player.java?at=default)