title: custom request headers in rspec controller test being passed as rack.session
body: <p>I tried following instructions on how to pass the custom headers but it's not working for me.  Here's what I'm calling in my respec test</p>
  
  <pre><code>post :create, {name:profile.name}, {'X-API-KEY' =&gt; 'somekey'}
  </code></pre>
  
  <p>From my controller I don't see it in the header as X-API-KEY but instead seems to be in request.headers["rack.session"]["X-API-KEY"]</p>
  
  <p>How do I get it to not pass it as "rack.session"</p>