HTTPS for GitHub Pages

Бесплатный статичный хостинг страниц github.io теперь по https.

You can now visit *.github.io sites using HTTPS and configure HTTPS enforcement for your site. With HTTPS enforcement enabled, any HTTP requests to your github.io site will be transparently redirected to HTTPS.

github.com/blog/2186-https-for-github-pages
help.github.com/articles/securing-your-github-pages-site-with-https