github pages not working code example

Example 1: github pages is not free

change your repository to public

Example 2: my github page doesn't work

The preferred files to be served are index.html, index.md, and README.md, 
in that order. If none of these files exist, your website will show a 404 
Not Found error, even if there are other HTML files in the repository.

Example 3: github url not showing

git reset --hard refs/original/refs/heads/master