1. Go to GitHub and register a free account. GitHub has fantastic tutorials that you might want to study if you are not yet familiar with the service.
  2. Fork the repository of the edition you are interested in.
  3. Edit the XML of the edition. This can be done either directly on GitHub, with any text editor on your local machine, or an online XML editor such as oXygen web that can hook into your GitHub account
  4. Send us a pull request
  5. We will review and merge your changes.

Branches on GitHub