Adding a Jekyll theme to your GitHub Pages site
You can add a Jekyll theme to your GitHub Pages site by editing your site’s _config.yml file.
GitHub Pages supports the officially supported Jekyll themes , as well as all open source Jekyll themes hosted on GitHub . You can also add supported Jekyll themes to your GitHub Pages sites using the Jekyll Theme Chooser. For more information, see “About Jekyll themes on GitHub.”
https://help.github.com/articles/adding-a-jekyll-theme-to-your-github-pages-site/
Tags: github