To add VS 2013 support, download the file somewhere and rename to .zip Then open it with some archiver and edit extension.vsixmanifest . Change <VisualStudio Version="11.0"> to <VisualStudio Version="12.0"> under <SupportedProducts>. Rename back to .vsix and you are ready to go.
I am planning to create a VB version too.
Although I haven't start creating the template yet, it is going to available for Visual Studio 2013 (here, on the Visual Studio gallery) while previous versions (2010, 2012 will be archived on the github repository.)