title: Referencing current branch in github readme.md
body: <p>In my github repo's <code>readme.md</code> file I have a Travis-CI badge. I use the following link:</p>
  <pre><code>https://travis-ci.org/joegattnet/joegattnet_v3.png?branch=staging
  </code></pre>
  <p>The obvious problem is that the branch is hardcoded. Is it possible to use some sort of variable so that the branch is the one currently being viewed?</p>