title: SwiftmailerBundle how can send email with html content? Symfony 2
body: <p>i try to send template with html content
  but in email i received only text</p>
  
  <p>how can i set for send email with html content?</p>
  
  <pre><code>$messaggio = \Swift_Message::newInstance()
                  -&gt;setSubject('Hello Email')
                  -&gt;setFrom('mittente@example.com')
                  -&gt;setTo('ffff@hotmail.it')
                  -&gt;setBody($this-&gt;renderView('AcmeUserBundle:Default:email.text.twig'))
                  ;
                  $this-&gt;get('mailer')-&gt;send($messaggio);
  </code></pre>