title: Change the default opening file github pages
body: <p>So i create a simple test repository <a href="https://github.com/mugas/imdb/" rel="nofollow noreferrer">https://github.com/mugas/imdb/</a>.
  The branch is gh-pages and I have an index.html file but it still opens the readme.md file instead. How can I change it to open the index.html?
  Thanks </p>