How do I enable Intellitest in VisualStudio 2015 RC?

I installed the Visual Studio 2015 RC and tried to "Run Intelltest" as per the instructions on the Microsoft Help Page, but the command doesn't appear on the popup menu as expected. Does anyone have any idea what happened? Was it pulled from the RC, or do I have to set a flag / configuration item, do an extra install, etc. Any help in this regard would be much appreciated...