chore: update router to beta 2

Author: Foxandxss

public/docs/_examples/package.json

@@ -32,7 +32,7 @@
     "@angular/http": "2.0.0-rc.4",
     "@angular/platform-browser": "2.0.0-rc.4",
     "@angular/platform-browser-dynamic": "2.0.0-rc.4",
-    "@angular/router": "3.0.0-beta.1",
+    "@angular/router": "3.0.0-beta.2",
     "@angular/router-deprecated": "2.0.0-rc.2",
     "@angular/upgrade": "2.0.0-rc.4",
     "angular2-in-memory-web-api": "0.0.14",