ionic2-firebase

1. Run npm install
2. Add platforms: ionic platform add android and ionic platform add ios
3. Install plugin cordova plugin add cordova-plugin-fcm --save
4. Create project on https://console.firebase.google.com
5. Add 2 new apps - one for Android and one for iOS
6. Copy google-service.json file to main project directory (the same directory of config.xml) for Android.
7. Look google-service.json if api-key is not empty. If so, download it again.
8. ionic run android to run app on Android
9. ionic prepare ios and run project in XCode - copy file into main directory Tree and follow that steps
10. Go to your project in https://console.firebase.google.com and select Notifications from menu -> *New message -> select your app, add message and click send