title: gem install git-up no longer working in El Capitan
body: <p>After upgrating to OS "El Capitan" I noticed that git-up was no longer installed. I tried to install by: </p>
  
  <pre><code>~  gem install git-up
  ERROR:  While executing gem ... (Errno::EACCES)
  Permission denied - /Library/Ruby/Gems/2.0.0/gems/git-up-0.5.12/bin/git-up
  ~  
  </code></pre>
  
  <p>Mal El Capitan</p>