title: Silent login with facebook api
body: <p>I have an app that allows a user to login with facebook. Is there anyway to keep a device authorized. For example, every time a user needs to login with facebook they are routed to the facebook application, where they are then routed back to my app. Is there a way to check for an access token and not re-route the user. I am using expo-facebook package and react-native.</p>