To set up middleman locally on Fedora:
install ruby, rubygems and rubygem-bundler
In the git checkout, do a bundle install. This installs all
the needed modules in their appropriate vesions.
To run a local web server to test the site:
bundle exec middleman server
Edit the haml/scss files and commit your changes, pushing to origin/master.
to deploy your changes:
bundle exec middleman build
bundle exec middleman deploy
This will push the site from ./build into origin/gh-pages branch.