Assuming you have Ruby and Bundler installed on your system (hint: for ease of managing ruby gems, consider using rbenv), first fork the theme from github.com:alshedivat/al-folio
to github.com:<your-username>/<your-repo-name>
and do the following:
$ git clone git@github.com:<your-username>/<your-repo-name>.git
$ cd <your-repo-name>
$ chruby 3.1.3
$ bundle install
$ bundle exec jekyll serve
Now, feel free to customize the theme however you like (don't forget to change the name!). After you are done, commit your final changes.
The theme is available as open source under the terms of the MIT License.
This page is forked from al-folio, which in turn, was based on the *folio theme (published by Lia Bogoev and under the MIT license).