Added missing NuGet.targets file.
Updated nuget.targets.
Renamed nuget.targets to work on linux.
Merge remote-tracking branch 'remotes/origin/master' into installer

Conflicts:
	.nuget/NuGet.targets
Updated nuget.targerts.
Merge remote-tracking branch 'remotes/origin/master' into installer

Conflicts:
	.nuget/nuget.config
Added nuget.targets.