add multiple routes

Add multiple router method with annotations like SymfonyFrameworkBundle.

with my router annotation

```php 
    /**
     * @Rest\Link("/matches1", name="_a_link_method")
     * @Rest\Get("/matches2",  name="_a_get_method")
     * @Rest\Get("/matches3",  name="_an_other_get_method")
     * @Rest\Post("/matches4",  name="_a_post_method")
     * @Rest\View(statusCode=200, serializerGroups="list")
     *
     */
    public function cgetAction( ParamFetcherInterface $paramFetcher)
    {

....
    }
```

my original route have name get_matches and with this PR i have these routes:
```bash
get_matches_a_get_method          GET      ANY    ANY  /api/matches2
get_matches_an_other_get_method   GET      ANY    ANY  /api/matches3
get_matches_a_post_method         POST     ANY    ANY  /api/matches4
get_matches_a_link_method         LINK     ANY    ANY  /api/matches1
```
see https://github.com/FriendsOfSymfony/FOSRestBundle/issues/324