added documentation for internal app sharing (#812)
added documentation for internal app sharing (#812)

* added documentation for internal app sharing

* fix prettier

Co-authored-by: Vojtech Novak <06722af6684aa042c79f188f94662d7f536fb5c9@gmail.com>

devfd/react-native-google-signin,apptailor/react-native-google-signin,devfd/react-native-google-signin,apptailor/react-native-google-signin,devfd/react-native-google-signin