3 ios improvements (please squash when merging) (#157)
3 ios improvements (please squash when merging) (#157)

* making getAllContacts method check permissions first and return 'denied' if appropriate. Also, removed more of the old style 'AB' contacts api with new style 'CN' api.

* made every method that uses the contactStore first check that it has a 'defaultContainerIdentifier', and return an auth error if not.

anton-aleksandrov/react-native-contacts,anton-aleksandrov/react-native-contacts,diatrevolo/react-native-contacts,RobTS/react-native-contacts,RobTS/react-native-contacts,npomfret/react-native-contacts,npomfret/react-native-contacts,rt2zz/react-native-contacts,RobTS/react-native-contacts,anton-aleksandrov/react-native-contacts,npomfret/react-native-contacts,rt2zz/react-native-contacts,diatrevolo/react-native-contacts,rt2zz/react-native-contacts,diatrevolo/react-native-contacts,rt2zz/react-native-contacts