Android - Notification click doesn't launch the app

Please add the following to README in order for the tray notifications to launch the app:

Add the following to `android/app/src/main/AndroidManifest.xml` at the end of the activity `...`
`


`

Without the above missing piece, I couldn't launch the app when clicking on the tray notification

Using Android device (Nexus 6P)

`"dependencies": {
...
"react": "16.0.0",
"react-native": "0.49.5",
"react-native-fcm": "^10.0.3",
...
},`