​https://medium.com/firebase-developers/how-to-setup-firebase-authentication-with-react-in-5-minutes-maybe-10-bb8bb53e8834​
​https://github.com/FirebaseExtended/reactfire​
​https://github.com/rakannimer/react-firebase/​
​https://firebaseopensource.com/projects/firebase/firebaseui-web-react/​
