renamed Object/MovableObject to Entity/MovableEntity
renamed object.h/cpp to entity.h/cpp
renamed movableobject files to movableentity
Entity now inherits from sf::Transformable
enities now use vertex arrays internally
drawing tiles again (kinda...)
Merge branch 'clang' of github.com:vheuken/Purity2D into clang
removed unnecessary line in before_script