Update README.md for adding the package
Update README.md for adding the package

Newer versions of RN require different instructions.
rt2zz/react-native-contacts,RobTS/react-native-contacts,npomfret/react-native-contacts,rt2zz/react-native-contacts,RobTS/react-native-contacts,IDTLabs/react-native-contacts,rt2zz/react-native-contacts,diatrevolo/react-native-contacts,RobTS/react-native-contacts,IDTLabs/react-native-contacts,diatrevolo/react-native-contacts,anton-aleksandrov/react-native-contacts,diatrevolo/react-native-contacts,rt2zz/react-native-contacts,anton-aleksandrov/react-native-contacts,npomfret/react-native-contacts,IDTLabs/react-native-contacts,npomfret/react-native-contacts,anton-aleksandrov/react-native-contacts