PrimeFaces tags not rendered
===

I am trying to make my first page using PrimeFaces Mobile, but the tags are not rendered.

My xhtml file looks like this:

    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml"
    	xmlns:f="http://java.sun.com/jsf/core"
    	xmlns:h="http://java.sun.com/jsf/html"
    	xmlns:p="http://primefaces.org/ui"
    	xmlns:pm="http://primefaces.org/mobile">
    <f:view>
    	<f:loadBundle basename="test.Labels"
    		var="labels" />
    	<h:head>
    		<title>#{labels.PageTitle}</title>
    		<meta http-equiv="Content-Type"
    			content="text/html; charset=iso-8859-1" />
    		<link rel="stylesheet" type="text/css" href="css/styles.css" />
    		<script type="text/javascript" src="js/global.js"></script>
    	</h:head>
    
    	<h:body>
    
    		<pm:page title="Hello World">
    			<pm:view id="main">
    				<pm:header title="Header" />
    
    				<pm:content>Content</pm:content>
    				<pm:buttonGroup orientation="horizontal">
    					<p:commandButton value="Yes" />
    					<p:commandButton value="No" />
    				</pm:buttonGroup>
    			</pm:view>
    		</pm:page>
    
    	</h:body>
    </f:view>
    </html>

I am using:

 - jsf 2.0 
 - embedded jetty 
 - primefaces-3.3.jar 
 - primefaces-mobile-0.9.3.jar

I have tried to add also:

    <application>
       <default-render-kit-id>PRIMEFACES_MOBILE</default-render-kit-id> 
    </application>

But an exception occurred:
Could not find a RenderKit for "PRIMEFACES_MOBILE".
Without this, the PrimeFaces tags are not rendered.

Thanks and any help is strongly appreciated.