title: Angular JS + Button should be enabled if at least one checkbox is checked how To do it?
body: <p>I want a button that is only enabled if at least one of a group of checkboxes is checked, similiar to the fiddle at <a href="http://jsfiddle.net/chriscoyier/BPhZe/76" rel="nofollow">http://jsfiddle.net/chriscoyier/BPhZe/76</a>:</p>
  
  <pre><code>var checkboxes = $("input[type='checkbox']"),
      submitButt = $("input[type='submit']");
  
  checkboxes.click(function() {
      submitButt.attr("disabled", !checkboxes.is(":checked"));
  });
  </code></pre>
  
  <p>I want to implement this using AngularJs.</p>