title: Adding "help" messages to fields
body: <p>I'm trying to add some help messages after each field in form in symfony2.</p>
  
  <p>I have read about one solution in official docs : <a href="http://symfony.com/doc/current/cookbook/form/form_customization.html#adding-help-messages">http://symfony.com/doc/current/cookbook/form/form_customization.html#adding-help-messages</a></p>
  
  <p>But this solution makes little sense, because we've need to create all form manually.
  For example, it easy to define label: <code>$formBuilder-&gt;add('myfieldname', 'text', array('label'=&gt;'some my field label'));</code> But how to pass help messages? (In other words, some custom variables)</p>