Navigation

It contains the global app's navigation model, based off Conductor.

Model

A screen is a union of all the screens available in the app

State

It uses tha app's global navigation state

Business logic

pushScreen() When a new screen is received, tell the view to navigate to it. In this app, that'd be Conductor pushing a new Controller.

backPressed() When the back key is pressed, tell the navigator's to pop and return the current screen