It is meant to be edited collaboratively like a wiki, except that instead of a web form, you get to use a text editor and git. What could be better?
If you want push access, contact firstname.lastname@example.org and provide your GitHub username. You may also send patches by mail (and feel free to cc email@example.com if appropriate).
sudo gem install bundler
sudo apt-get install zlib1g-dev# ref 
bundle exec jekyll serve
Based on https://help.github.com/articles/using-jekyll-with-pages/