According to this post intellisense should also be working on the new VS 2015, but so far I only get intellisense for the angular object and not for the dependencies or my c
Follow this article to add more comprehensive intellisense to VS.
http://blogs.msdn.com/b/visualstudio/archive/2015/02/05/using-angularjs-in-visual-studio-2013.aspx
Download the angular.intellisense.js file and place it in the Program Files (x86)\Microsoft Visual Studio 12.0\JavaScript\References folder