fix(Router): mark Pipeline and RouteRegistry as Injectable

fix #2755

modules/angular2/src/router/route_registry.ts

@@ -20,12 +20,14 @@ import {
 } from 'angular2/src/facade/lang';
 import {RouteConfig} from './route_config_impl';
 import {reflector} from 'angular2/src/reflection/reflection';
+import {Injectable} from 'angular2/di';
 
 /**
  * The RouteRegistry holds route configurations for each component in an Angular app.
  * It is responsible for creating Instructions from URLs, and generating URLs based on route and
  * parameters.
  */
+@Injectable()
 export class RouteRegistry {
   _rules: Map<any, RouteRecognizer>;