Level Loading

New Method in FileIO class
Test Level working

No collisions yet
Player placeholder
Animated Sprites Update
Collisions Update

Player now has collisions
Added silly stickman for better illustration
Enemy class draft
The Big Comment Update

Commented lots of code
Added scene width getters in GameState(s)
Merge pull request #3 from TijmenUU/gameplay

Gameplay update (New GameState + functionality)