title: Change Avatar Next to GitHub Username (For Commits)
body: <p>I have a username on GitHub and have an avatar for that -- easy enough.<br>
  The <a href="http://developer.github.com/v3/users/">Get a single user V3 API</a> does include my gravatar when I call it with my GitHub id.  </p>
  
  <p>However, when I push my commits, I have my name show as the committer but next to it is that goofball octocat silhouette.  How can I change this?</p>