several changes and added content

- added Bird sprite and xml
- moved Background.cs to SpriteManager folder and converted into a Sprite
- many changes to GameScreen to draw the new Bird sprite
Merge branch 'master' of https://github.com/turkycat/HackingKinect

Conflicts:
	KinectoSoar/KinectoSoar/bin/x86/Debug/KinectoSoar.exe
	KinectoSoar/KinectoSoar/bin/x86/Debug/KinectoSoar.pdb
	KinectoSoar/KinectoSoar/obj/x86/Debug/ContentPipeline-{171C8402-6C0C-458B-8456-5CB842C04B22}.xml
	KinectoSoar/KinectoSoar/obj/x86/Debug/KinectoSoar.csproj.FileListAbsolute.txt
	KinectoSoar/KinectoSoar/obj/x86/Debug/KinectoSoar.exe
	KinectoSoar/KinectoSoar/obj/x86/Debug/KinectoSoar.pdb
	KinectoSoar/KinectoSoar/obj/x86/Debug/cachefile-{171C8402-6C0C-458B-8456-5CB842C04B22}-targetpath.txt