title: Get radiobutton value using template.find
body: <p>I want to use <code>template.find</code> (in Templates.xxx.events) to get the value of the checked radiobutton of a radiobutton group. In jquery I would use <code>$('input:radio[name=XXXXX]:checked').val()</code>. That does not work with <code>template.find</code>. <code>template.find('input:radio[name=XXXXX]:checked')</code>returns null. </p>
  
  <p>What should I be using as CSS selector for this task?</p>