UPDATE: I wrote a blog post (beginning of a series) on how to do this with WinJS 2.0. http://blog.appliedis.com/2014/10/15/writing-winjs-apps-with-durandaljs-on-windows-8-1/
-- Old Gist Below --
This gist is to help people get started with Durandal integration with WinJS applications. The information is current for WinJS 1.0 (Windows 8.0, not 8.1). It will be updated in the future to incorporate any necessary changes for 2.0/Win8.1.