Static: Router.go(path, [state])

Based on our discussions in https://github.com/ianstormtaylor/router/issues/6, I've added `Router.go(path, [state])`

This will trigger all the routers that listen for `path`. If you'd like to just trigger one route on one router, you can call the `#go` method on an instance (ie. `router.go(path, [state])` )