Thanks for the shout out. The original post is here: http://blogs.msdn.com/b/stuartleeks/archive/2014/05/20/teaching-asp-net-web-api-to-wadl.aspx

I've also since wrapped it up as a NuGet package to make it even easier to use: http://blogs.msdn.com/b/stuartleeks/archive/2014/06/22/teaching-asp-net-web-api-to-wadl-via-nuget.aspx

Stuart