MIT/X11
This collection of hacks is using (and would be nothing without) JSIL by Kevin Gadd.
Using git bash:
git clone git://github.com/markusjohnsson/JSIL.Hacks.git
git submodule init
git submodule update
cd Dependencies/JSIL
git submodule init
git submodule update
Load Solution Dependencies\JSIL\JSIL.sln in Visual Studio and build it by hitting F6.
Close the solution.
Troubleshooting: if the build fails, try to unload the XNA projects by right clicking and hitting "Unload project".
Open JSIL.Hacks.sln at the repository root.
Right-click the example you want to run, for example HelloWorld and hit "Set as StartUp Project". Hit F5 to compile & transcode the application to HTML+JS.
Right-click the HelloWorld project again and choose "Open Folder in Windows Explorer", enter the bin\Debug subdirectory and open MainPage.html in your favorite web browser.