Updated Collision Checking

Added player to enemy collisions and enemy to enemy collisions.
Created Menu Class
updated to ignore .exe and .pub files
Merge remote-tracking branch 'origin/Neiman'

Conflicts:
	.gitignore
	Otter/bin/Debug/Otter.dll
	Otter/bin/Debug/Otter.pdb
	Otter/obj/x86/Debug/DesignTimeResolveAssemblyReferencesInput.cache
	Otter/obj/x86/Debug/Otter.csproj.FileListAbsolute.txt
	Otter/obj/x86/Debug/Otter.csprojResolveAssemblyReference.cache
	Otter/obj/x86/Debug/Otter.dll
	Otter/obj/x86/Debug/Otter.pdb
	OtterTutorial/Entities/Bullet.cs
	OtterTutorial/Entities/Enemy.cs
	OtterTutorial/Entities/Player.cs
	OtterTutorial/Util/Map.cs
	OtterTutorial/bin/Debug/Otter.dll
	OtterTutorial/bin/Debug/Otter.pdb
	OtterTutorial/bin/Debug/OtterTutorial.exe
	OtterTutorial/bin/Debug/OtterTutorial.pdb
	OtterTutorial/bin/Debug/OtterTutorial.vshost.exe
	OtterTutorial/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache
	OtterTutorial/obj/Debug/OtterTutorial.csprojResolveAssemblyReference.cache
	OtterTutorial/obj/Debug/OtterTutorial.exe
	OtterTutorial/obj/Debug/OtterTutorial.pdb