One thing that was missing “out of the box” was the ability to include a list of categories in the sidebar with a link. Fortunately Octopress (well actually Jekyll) is written in such away that creating a plug-in to do this is very simple.
Firstly we need to write a little ruby code. Add a file to the plugins directory called category_list_tag.rb. This plug-in will take the category data from the site and generate list items for each category. On line 17 the category_list tag is then registered and made available to the liquid templating engine.
And that’s all she wrote! I think Octopress / Jekyll is an excellent blog engine / static site generator, and being able to hack away and write simple plug-ins quickly makes it my number one choice… for now.