bugfix: put end-of-screen handling back into the collision detection
code
Update README.md

references
Update README.md
Collision ordering fix in boulderdash game.
Added whack-a-mole game with bonus cat.
Goat chase: interaction ordering bugfix
Added Seaquest variant
Merge branch 'master' of https://github.com/schaul/py-vgdl

Conflicts:
	vgdl/ontology.py