title: How to ignore uncommited change in Github gui for MAC?
body: <p>I am using Github GUI for Mac.
  Now I've some changes in my local repository, but I want to ignore them and pull latest remote repository.
  I tried Repository/Pull, but got Git Error.</p>
  
  <p>"•error: Your local changes to the following files would be overwritten by merge:
      Classes/xxx.m
  Please, commit your changes or stash them before you can merge."</p>
  
  <p>I tried Repository/Synchronize, but got following error.</p>
  
  <p>"Sync Failed. Please commit all your changes before syncing."</p>
  
  <p>Any idea?</p>