title: Spring Extension REST Resource @RequestParam annotation not detected
body: <p>trying to use the spring extension of Restlet ,
  have configured as per the example <a href="http://wiki.restlet.org/docs_2.1/13-restlet/28-restlet/70-restlet/196-restlet.html" rel="nofollow">http://wiki.restlet.org/docs_2.1/13-restlet/28-restlet/70-restlet/196-restlet.html</a>
  In addition to that trying to capture the request parameters using the @RequestParam annotation but end up getting the parameter value as null.</p>
  
  <p>Resource looks like,</p>
  
  <pre><code>class MyResource extends ServerResource implements IResource {
  
  @Get
  @RequestMapping(value="/id") 
  public void get(@RequestParam(value="name") String name) {
  ...
   }
  }
  </code></pre>
  
  <p>HTTP Request <a href="http://localhost:8080/messages/id?name=XXX" rel="nofollow">http://localhost:8080/messages/id?name=XXX</a>
  Web.xml looks like</p>
  
  <pre><code>&lt;servlet&gt;
    &lt;servlet-name&gt;test-servlet&lt;/servlet-name&gt;
  &lt;servlet-class&gt;org.restlet.ext.spring.RestletFrameworkServlet&lt;/servlet-class&gt;
  &lt;/servlet&gt;
  &lt;!-- Catch all requests --&gt;
  &lt;servlet-mapping&gt;
      &lt;servlet-name&gt;test-servlet&lt;/servlet-name&gt;
      &lt;url-pattern&gt;/*&lt;/url-pattern&gt;
  &lt;/servlet-mapping&gt;
  </code></pre>
  
  <p>In the end the name value is 'null'. I think the spring based annotations are not detected. I have no clue why this is happening?</p>