You're looking at the Probo Jekyll Example project. This project is a sample GitHub Pages site built to show folks how to use Jekyll with Probo.CI.
Clone the Probo Jekyll Example project repository and run the following command to build the Jekyll site files and Sass.
bundle exec jekyll build
The built Jekyll site files will be available in the _site directory after a successful build.
No support is provided with this project. It is solely meant as a example Jekyll project for Probo users.
Contact Probo Support if you are having issues getting a GitHub Pages project or other Jekyll project integrated with your Probo.CI account.
The Probo Jekyll Example project is based on this Jekyll Example project by Mark Otto. Thanks Mark!