My first Ionic App

This is my first ionic app.

Reference links

1. How To Authenticate with Firebase and Ionic 3 — Email/Password and Google Sign-In https://medium.com/appseed-io/integrating-firebase-password-and-google-authentication-into-your-ionic-3-app-2421cee32db9 https://github.com/appseed-io/ionic3-firebase-auth

2. Ionic Environment Variables https://github.com/gshigeto/ionic-environment-variables

3. ngx errors https://github.com/UltimateAngular/ngx-errors