added the base of an enemy class
Merge branch 'master' of https://github.com/suntinwong/poly-krisis
Merge branch 'master' of https://github.com/suntinwong/poly-krisis
Merge branch 'master' of https://github.com/suntinwong/poly-krisis
made the building shorted
Merge branch 'master' of https://github.com/suntinwong/poly-krisis

Conflicts:
	POLY-KRISIS/POLY-KRISIS/Game1.cs