title: How to add license to an existing GitHub project
body: <p>When I created a GitHub project I chose None.</p>
  
  <p>How can I now add a GPL license to my already added project?</p>
  
  <p><a href="https://i.stack.imgur.com/BCJoL.png"><img src="https://i.stack.imgur.com/BCJoL.png" alt="screenshot"></a></p>