This is the theme used on blueverve.com, a UX focused development team. We <3 ruby.
This theme is based on the work of Jonas Forsberg, who created the initial build of Jekyll + Heroku + Unicorn, which allows for Blazing fast blogging with Jekyll deployed to Heroku with 6 Unicorn workers.
More info at jonasforsberg.se/2012/07/22/jekyll-heroku-unicorn