User is not signed in automatically after they Sign-up

[vikramkapoor]

After Sign-up is successful the user should be signed in and shouldn't have to enter credentials on the sign-in screen again

[vikramkapoor]

Following changes in sign_up.dart fix the issue.

import 'package:flutter_firebase_auth_example/util/state_widget.dart';

    //now automatically login user too
    await StateWidget.of(context).logInUser(email, password);
    await Navigator.pushNamed(context, '/');
    //await Navigator.pushNamed(context, '/signin');