title: Git - MacOS user is commit author instead of Github user
body: <p>I just switched to OS X and did my first commit. After pushing to Github the commit author was not my Github username but the current user on my laptop. The commit author appears as "non-author". I want the commit author to be my Github username like before. What should I do to fix it?
  Here is a photo of what I mean: <a href="https://i.imgur.com/vHvCdIP.png" rel="nofollow noreferrer">https://i.imgur.com/vHvCdIP.png</a></p>