This is a sample of Ionic v2 and Firebase Auth and DB Connection. You can signup and login to the system then you can add your notes like to-do app.
Firebase Auth System is used for Signup and Login. Firebase DB is used for adding notes.
I have used Ionic v2 Conferance App for template.
Other than Firebase, I have used Google Maps API for a simple Google Maps Demo from Conferance App.
Firstly, update myFirebaseConfig in app.module.ts for your own settings.
$ git clone https://github.com/mg52/Ionic-v2-Firebase
$ cd Ionic-v2-Firebase
$ npm install
$ ionic serve