title: gem not available, even after adding to gemfile and running bundle install
body: <p>I'm making a simple task where I need to parse an XML Http response, all the http is working fine, and I have my xml string....</p>
  
  <p>I'm trying to use the <code>xml-simple</code> gem.</p>
  
  <p>I've <code>gem install xml-simple</code></p>
  
  <p>I've also added <code>gem 'xml-simple'</code> to the gemfile</p>
  
  <p>Ran <code>bundle install</code> with success</p>
  
  <p>but when I try to <code>require 'xml-simple'</code> in my rake task it fails saying <code>no such file to load -- xml-simple</code>...</p>
  
  <p>What am I missing???</p>