Merge pull request angular-ui#20 from sudhirrs/patch-1

Added destroy handler to remove the select2 when the parent element is removed from DOM

Author: ProLoser

src/select2.js

@@ -122,6 +122,10 @@ angular.module('ui.select2', []).value('uiSelect2Config', {}).directive('uiSelec
             }
           }
         }
+        
+        elm.bind("$destroy", function() {
+          elm.select2("destroy");
+        });
 
         attrs.$observe('disabled', function (value) {
           elm.select2('enable', !value);