title: Unable to load gems in cloud 9
body: <p>I cannot load many ruby gems in Cloud 9's ruby on rails.</p>
  
  <p>For example I run </p>
  
  <pre><code>$ gem install signer
  </code></pre>
  
  <p>and get:</p>
  
  <pre><code>Successfully installed signer-1.4.2
  1 gem installed
  </code></pre>
  
  <p>but then when I try to call it with: </p>
  
  <pre><code>require "signer"
  </code></pre>
  
  <p>I get the following error upon running:</p>
  
  <pre><code>cannot load such file -- signer
  </code></pre>
  
  <p>I am getting desperate, any help would be immensely appreciated!</p>