title: JSON encoding wrongly escaped (Rails 3, Ruby 1.9.2)
body: <p>In my controller, the following works (prints "oké")</p>
  
  <pre><code>puts obj.inspect
  </code></pre>
  
  <p>But this doesn't (renders "ok\u00e9")</p>
  
  <pre><code>render :json =&gt; obj
  </code></pre>
  
  <p>Apparently the <code>to_json</code> method escapes unicode characters. Is there an option to prevent this?</p>