[FrameworkBundle] added route debug information when path matches url

the result of the command `app/console router:match /demo/hello/foo` would be:

![Schermata 02-2456326 alle 17 04 42](https://f.cloud.github.com/assets/254808/120934/a1499432-6d52-11e2-8b67-46a164c30ea0.png)

instead of just:

    Route "_demo_hello" matches