title: git visual diff between branches
body: <p>This answer is great for seeing a visual diff between two files that are checked into git:
  <a href="https://stackoverflow.com/questions/255202/how-do-i-view-git-diff-output-with-a-visual-diff-program/949242#949242">How do I view &#39;git diff&#39; output with a visual diff program?</a> </p>
  
  <p>However, I'd like to see a visual diff between two branches. So far, my best bet seems to be: </p>
  
  <pre><code>git diff --name-status master dev
  </code></pre>
  
  <p>which isn't very informative and not very visual.</p>
  
  <p>Is there anything better out there?</p>