First group of routing examples

example/angular/routing/accessing_router_in_controller/my_controller.dart

+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+library my_controller;
+
+import 'package:angular/angular.dart';
+import 'book.dart' show Book;
+
+@NgController(
+    selector: '[my-controller]',
+    publishAs: 'ctrl'
+)
+class MyController implements NgDetachAware {
+  RouteHandle route;
+  String bookId;
+
+  Map<String, Book> bookMap = {
+    "1": new Book('War and Peace', 'A really long book'),
+    "2": new Book('The Old Man and the Sea', 'A really short book')
+  };
+
+  MyController(RouteProvider router) {
+    bookId = router.parameters['bookId'];
+    route = router.route.newHandle();
+  }
+
+  detach() {
+    route.discard();
+  }
+}