added enemy class
added initial collison support
Merge branch 'master' of https://github.com/UCCS-GDD/CS3350-HazardSweep

Conflicts:
	Hazard Sweep/Hazard Sweep.v12.suo
	Hazard Sweep/Hazard Sweep/Hazard_Sweep/obj/x86/Debug/ContentPipeline-{5A3B4E60-5622-4D53-AE4D-E2DE3ACEB64B}.xml
	Hazard Sweep/Hazard Sweep/Hazard_Sweep/obj/x86/Debug/DesignTimeResolveAssemblyReferencesInput.cache
	Hazard Sweep/Hazard Sweep/Hazard_SweepContent/obj/x86/Debug/DesignTimeResolveAssemblyReferencesInput.cache
	Hazard Sweep/Hazard Sweep/Hazard_SweepContent/obj/x86/Debug/Hazard_SweepContent.contentprojResolveAssemblyReference.cache