The is repository contains the full source of the togglz.org site.
You will need to install Ruby 2.2.5 or newer and a few gems:
$ gem install awestruct bootstrap-sass haml-contrib maruku
To start the development mode execute this command:
$ awestruct -d
After a few seconds you can open http://localhost:4242/ in your browser to preview the site. Now you can start to edit the source files. Changes will automatically be compiled.