Currently the layer cannot be selected for low zoom levels.

As I understand there is no public demo, but maybe adding some image examples to readme would be nice?

Especially demonstration of multimodal capability.

It it would be considered as an improvement I can try adding something like this.

NavigationMapView should automatically switch to the night style when the Smart Invert Colors option is enabled in iOS 11, based on UIAccessibilityIsInvertColorsEnabled() or the [UIAccessibilityInvertColorsStatusDidChange](https://developer.apple.com/documentation/foundation/nsnotification.name/1615196-

If a developer attempts to calculate directions with more than three waypoints, the following error is returned:

Error Domain=MBDirectionsErrorDomain Code=-1 "Too many coordinates;
maximum number of coordinates is 3." 
UserInfo={NSLocalizedFailureReason=Too many coordinates;
maximum number of coordinates is 3.}

It appears the [Mapbox Directions API](https://www.mapbox.com/api-d