Cleaning fails with Visual studio 2015

4>------ Rebuild All started: Project: UE4, Configuration: Development_Editor x64 ------
4> Cleaning UE4Editor Binaries…
4>EXEC : GenerateProjectFiles error : A valid version of Visual Studio does not appear to be installed.
4> Press any key to continue . . .

There is allready a pull request.
https://github.com/EpicGames/UnrealEngine/pull/1690

Thanks, helped me!