http://uk.osgeo.org/foss4guk2016/
To get a local copy of the repository clone it using git. There is only one
gh-pages branch where the content and template lives.
You can then edit the content and test locally after setting up your pages site locally with Jekyll.
Once you're happy with your changes and wish to publish them:
- Pull any upstream changes, merge and test again
- Commit your changes and push to the gh-pages branch
- Wait a few minutes for the Jekyll site to be built by GitHub Pages :-)