title: Failing deploy with RVM + unicorn
body: <p>I'm trying to setup a Sinatra App with unicorn.
  After following <a href="http://tech.tulentsev.com/2012/03/deploying-with-sinatra-capistrano-unicorn/" rel="nofollow noreferrer">this example</a>
  and adjusting it to my needs, I've gotten this error:</p>
  <pre><code>&lt;my_path_name&gt;/vendor/bundle/ruby/1.9.1/gems/kgio-2.8.0/lib/kgio.rb:21:in 'require': cannot load such file -- kgio_ext (LoadError)
  </code></pre>
  <p>I'm using <code>rvm 1.18.5</code>, <code>ruby 1.9.3p374 (2013-01-15 revision 38858) [x86_64-linux]</code> and the latest release of <code>unicorn 4.5.0</code> which pulls <code>kgio 2.8.0</code></p>
  <p>The OS is <code>Red Hat Enterprise Linux Server release 5.6</code>.
  I've also tried with <code>ruby-1.9.3-p125</code>.</p>