Sends required data object to route call from popstate event.

The call to route a URL when the `popstate` event fires was missing a data object that allowed the receiving view to know which route to call. This is a quick fix but ideally, `Router` would supplement the missing data attribute with the given path, [somewhere here](https://github.com/rosy-components/rosy-routing/blob/master/Router.js#L159-L181).