title: how to config the OneupUploaderBundle?
body: <p>I am trying to config the OneupUploaderBundle. According to the documentations in 
  <a href="https://github.com/1up-lab/OneupUploaderBundle/blob/master/Resources/doc/index.md" rel="nofollow">github</a>, the given config is:</p>
  
  <pre><code>oneup_uploader:
      mappings:
          gallery:
              frontend: blueimp # or any uploader you use in the frontend
  </code></pre>
  
  <p>For this config, I got this error:</p>
  
  <pre><code>Twig_Error_Runtime: An exception has been thrown during the rendering of a template ("Unable to generate a URL for the named route "_uploader_upload_gallery" as such route does not exist.") in "MinnAdsBundle:Motors:oneup.html.twig" at line 25.
  </code></pre>
  
  <p>I tried to solve this issue by adding this config (as mentionned in github) to become like this:</p>
  
  <pre><code>oneup_uploader:
      mappings:
          gallery:
              frontend: blueimp # or any uploader you use in the frontend  
      resource: .
      type: uploader 
  </code></pre>
  
  <p>The obtaind error is:</p>
  
  <pre><code>InvalidConfigurationException: Unrecognized options "resource, type" under "oneup_uploader"
  </code></pre>
  
  <p>So, I am wondering what I have missed in the config of this bundle.</p>
  
  <p>For your information, The version I installed in my symfony project is:</p>
  
  <pre><code>"oneup/uploader-bundle": "1.3.1"
  </code></pre>
  
  <p>Thank for your help.</p>