UPDATE, 28 June 2016:
The package has been renamed to CBAutoSave in the Visual Studio Gallery. Icons and images got a makeover, but no other functionality changes.
I have uploaded my Autosave extension for Visual Studio to the Visual Studio Gallery.
Look for the CBExtensionPkg.
(I’ll continue to update the private site, as well, for people that have that set up and want to keep using it.)
I created a new WinServer 2012 VM with VS2013 Community edition on Azure and installed the extension from the Gallery without problem.
Let me know of issues you find…