title: View a file in a different Git branch without changing branches
body: <p>Is it possible to open a file in a git branch without checking out that branch? How?</p>
  
  <p>Essentially I want to be able to open a file in my <a href="http://pages.github.com/">github pages</a> branch without switching branches all the time. I don't want to modify it, just want to view it.</p>