This is a Jekyll website. You need to haveRuby installed to use Jekyll. See theJekyll Installation Guide.

GitHub places some restrictions on the version of Jekyll and associated plug-ins used. To manage this you need to get theBundler gem and use it with theGemfile provided in the repo root. To get Bundler use:

gem install bundler

To install the Jekyll and associated gems, move into the folder containingGemfile and do:

bundle install

Once that is done make sure to always prefix your Jekyll commands withbundle exec.