title: rails 3 pagination with kaminari on mongoid embedded documents
body: <p>When I call paginate with kaminari on a collection of embedded documents I get the following error: </p>
  
  <pre><code>(Access to the collection for Document is not allowed since it is an embedded document, please access a collection from the root document.):
  </code></pre>
  
  <p>Any idea on how I can fix that ? I have installed kaminari as a gem.</p>
  
  <p>Alex</p>