title: How to git diff between two versions of the same file within the same branch using Tortoise?
body: <p>I am a recent convert from using an IDE to using Sublime. One of the things that was really useful to me via IDE was their diff tools. For instance in RubyMine you could see the two files next to each other, and color-highlights of the lines that were added/removed. </p>
  
  <p>In Sublime, I was able to install the git package via the package installer and git diff within Sublime. But it still doesn't give me the nice side-by-side view of the +/- lines. I'm wondering how to do this via TortoiseGit Diff. Can someone help? Thanks.</p>