- https://help.github.com/categories/95/articles
- https://help.github.com/articles/repository-metadata-on-github-pages
- https://help.github.com/articles/migrating-your-pages-site-from-maruku
- https://github.com/vmg/redcarpet
- https://github.com/gettalong/kramdown
- https://github.com/gettalong/kramdown/wiki/Libraries-extending-the-functionality-of-kramdown