get auth working with offscreen document

packages/signup/firebaseConfig.js

@@ -0,0 +1,8 @@
+export const config = {
+	apiKey: 'AIzaSyBl8Dz7ZOE7aP75mipYl2zKdLSRzBU2fFc',
+	authDomain: 'web-maker-app.firebaseapp.com',
+	databaseURL: 'https://web-maker-app.firebaseio.com',
+	projectId: 'web-maker-app',
+	storageBucket: 'web-maker-app.appspot.com',
+	messagingSenderId: '560473480645'
+};