Added functionality for shooting, added functionality Projectile.cs, improved entity rotation functioning and added a sound effect for testing purposes.
Fixed an issue with git
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Merge branch 'master' of https://github.com/Raunio/PlanetaryDefence

Conflicts:
	PlanetaryDefence.suo
	PlanetaryDefence/PlanetaryDefence/bin/Windows Phone/Debug/PlanetaryDefence.dll
	PlanetaryDefence/PlanetaryDefence/bin/Windows Phone/Debug/PlanetaryDefence.pdb
	PlanetaryDefence/PlanetaryDefence/bin/Windows Phone/Debug/PlanetaryDefence.xap
	PlanetaryDefence/PlanetaryDefence/obj/Windows Phone/Debug/ContentPipeline-{A31DA512-84F0-4B20-BE96-DA98A3825003}.xml
	PlanetaryDefence/PlanetaryDefence/obj/Windows Phone/Debug/PlanetaryDefence.csproj.FileListAbsolute.txt
	PlanetaryDefence/PlanetaryDefence/obj/Windows Phone/Debug/PlanetaryDefence.dll
	PlanetaryDefence/PlanetaryDefence/obj/Windows Phone/Debug/PlanetaryDefence.pdb
	PlanetaryDefence/PlanetaryDefence/obj/Windows Phone/Debug/XapCacheFile.xml