typescript-angular: Fix directive memory leak

examples/typescript-angular/js/Application.js

@@ -45,6 +45,7 @@ var todos;
         return {
             link: function ($scope, element, attributes) {
                 element.bind('blur', function () { $scope.$apply(attributes.todoBlur); });
+                $scope.$on('$destroy', function () { element.unbind('blur'); });
             }
         };
     }

examples/typescript-angular/js/directives/TodoBlur.ts

@@ -10,6 +10,7 @@ module todos {
         return {
             link: ($scope: ng.IScope, element: JQuery, attributes: any) => {
                 element.bind('blur', () => { $scope.$apply(attributes.todoBlur); });
+                $scope.$on('$destroy', () => { element.unbind('blur'); });
             }
         };
     }