docs(code pens): Added codepens to checkbox, radio, toggle

js/ext/angular/src/directive/ionicCheckbox.js

@@ -8,6 +8,7 @@ angular.module('ionic.ui.checkbox', [])
  * @name ionCheckbox
  * @module ionic
  * @restrict E
+ * @codepen hqcju
  * @description
  * No different than the HTML checkbox input, except it's styled differently.
  *

js/ext/angular/src/directive/ionicRadio.js

@@ -8,6 +8,7 @@ angular.module('ionic.ui.radio', [])
  * @name ionRadio
  * @module ionic
  * @restrict E
+ * @codepen saoBG
  * @description
  * No different than the HTML radio input, except it's styled differently.
  *

js/ext/angular/src/directive/ionicToggle.js

@@ -7,6 +7,7 @@ angular.module('ionic.ui.toggle', [])
  * @ngdoc directive
  * @name ionToggle
  * @module ionic
+ * @codepen tfAzj
  * @restrict E
  *
  * @description
@@ -55,7 +56,7 @@ angular.module('ionic.ui.toggle', [])
          checkbox = el.children[0];
          track = el.children[1];
          handle = track.children[0];
-         
+
          var ngModelController = angular.element(checkbox).controller('ngModel');
 
          $scope.toggle = new ionic.views.Toggle({