title: git hub repo linking
body: <p>I am working on a site that I have a GitHub repo setup for. I just launched it, but like an idiot I didn't just pull the repo from GitHub to the new server, instead I did an FTP transfer only to realize my mistake later. </p>
  
  <p>Is there an easy way to link up the server version with the existing git hub repo then do a <code>dif</code> and <code>push</code> the changes on the server version to the existing GitHub repo?</p>