old_contents: function rawGitUrl(ghHandle, branchName){
      return "//rawgit.com/" + ghHandle + "/boom/" + branchName + "/lib/boom.js";
  }
  
  var URL = rawGitUrl("audibleblink", "simplify");
  
  var js = document.createElement('script');
  js.src = URL;
  document.head.appendChild(js);
  
new_contents: // replace with your username and branch to customize after forking
  var URL = rawGitUrl("audibleblink", "simplify");
  
  
  function rawGitUrl(ghHandle, branchName){
      return "//rawgit.com/" + ghHandle + "/boom/" + branchName + "/lib/boom.js";
  }
  
  var js = document.createElement('script');
  js.src = URL;
  document.head.appendChild(js);
  
subject: add instruction for customization