The jekyll_and_hyde gem is a HTML presentation generator that generates a basic Jekyll scaffold with Slippy hooking up. This screencast(http://vimeo.com/jingwenowenou/cook-up-presentations-with-jekyllandhyde) walks you through the ideas behind jekyll_and_hyde and how to create a presentation and then publish it to GitHub Pages. The slide is available at htttp://owenou.com/​jekyll_and_hyde_demo.