Remove build folder on windows, so rake build does clean build
Remove build folder on windows, so rake build does clean build

rsredsq/AtomicGameEngine,rsredsq/AtomicGameEngine,rsredsq/AtomicGameEngine,nonconforme/AtomicGameEngine,rsredsq/AtomicGameEngine,rsredsq/AtomicGameEngine,nonconforme/AtomicGameEngine,rsredsq/AtomicGameEngine,rsredsq/AtomicGameEngine,nonconforme/AtomicGameEngine,rsredsq/AtomicGameEngine,rsredsq/AtomicGameEngine,rsredsq/AtomicGameEngine,nonconforme/AtomicGameEngine,nonconforme/AtomicGameEngine,nonconforme/AtomicGameEngine,nonconforme/AtomicGameEngine,nonconforme/AtomicGameEngine,rsredsq/AtomicGameEngine,nonconforme/AtomicGameEngine,nonconforme/AtomicGameEngine