Update content and dependencies version
- The configuration of the site and the content has been updated to reflect that it's only a demonstration for OW2 theme
- Add a .gitignore file
- Update Jekyll version
- Add a note to warn that this is not an actual Jekyll OW2 theme but rather a Jekyll site with a custom layout and style
If we plan to use this look and feel for several OW2 website we might want to create a theme and package it in a gem: https://jekyllrb.com/docs/themes/#creating-a-gem-based-theme
@mh I mainly update this to learn a little bit more about Jekyll, Ruby and Bundler so I'm not sure if it's useful to ask you to review this merge request, I let you decide ;-)