title: How can I specify a gem to pull from a private github repository?
body: <p>I have a private repository on Github that I want to use. I deploy my app to Heroku. How can I specify a private repository as the source on my gemfile? I imagine it wouldn't be enough to simply say</p>
  
  <pre><code>gem "mygem", :git=&gt;"my github address" 
  </code></pre>