JavaScript fos.Router.match

This function is matching routes in JS. If you need to know what route given url is you need just call
Routing.match(url);

This is first version of this, and it need some additional work to be done:
1. Should support default values.
2. Should check hosttokens

I put it there, as I'm not sure if this functionality should be present in this bundle. In my opinion it can be usefull.


And I've question about this, as I'm not familiar with google closure, but when i was using standard object, i has a problem with non existing index, and this
```
ret.set("x",  ret.get("x"),toObject())
```
looks bad. How should it be written?