title: Including novalidate attribute into Symfony2 twig template
body: <p>I am trying to disable the HTML5 validation of my form and I have seen I can include the novalidate into the form tag however I am using</p>
  
  <pre><code>{{ form_start(contact) }}
  {{ form_end(contact) }}
  </code></pre>
  
  <p>to create my forms. </p>
  
  <p>Now from the what I have been reading I should be able to include an attribute into the form_start such that the code would give me this</p>
  
  <pre><code>{{ form_start(contact, {'attr' : {'novalidate'}})
  </code></pre>
  
  <p>This however is not working...does anyone have any ideas?</p>