title: How to re-include an excluded directory in Android Studio?
body: <p>It's explained how to exclude a directory in Android Studio <a href="https://stackoverflow.com/a/30584701/1664314">here</a>. It also has a warning about not knowing how to include it back again. Now I need to do so.</p>
  
  <p>Of-course I can create/import the project again. But I guess there's a better way of doing that. Is there? How?</p>