Additions to radio control

setState
* $radio parameter defaults to this.$radio

// Because this doesn't make sense:
var $radio = $('.radio.something-unique input');
$radio.radio('setState', $radio);

* Always removes .checked .disabled classes before adding desired ones back
Additions to radio control

setState
* $radio parameter defaults to this.$radio
  // Because this doesn't make sense:
  var $radio = $('.radio.something-unique input');
  $radio.radio('setState', $radio);

* Always removes .checked .disabled classes before adding desired ones back
Merge pull request #224 from soldoutactivist/radio-additions-071013

Additions to radio control