A medium inspired Jekyll blog theme. The basic idea came from the Ghost theme Readium 2.0. I use mediator on my own blog The Base.
You can download the theme here: https://github.com/dirkfabisch/mediator
You can find out more info about customizing your Jekyll theme, as well as basic Jekyll usage documentation at jekyllrb.com
You can find the source code for the Jekyll new theme at: github.com/jglovier/jekyll-new
You can find the source code for Jekyll at github.com/jekyll/jekyll