Merge pull request #5 from matejlogar/base-game

Merging so I can do some fixes/changes before we continue
Move files into a "game" module
Add missing import and fix a wrong call
Move resources inside the game, make them modules so we
can easily specify the locations in resources.py
Make sure we can pass any extra args to the Sprite
Don't use hardcoded values!
Clean up imports
Use integers in AARectShape
80 char limit
PEP8 fixes