Updated documentation in main README file
Updated documentation in main README file

zigbang/react-native-maps,zigbang/react-native-maps,wannyk/react-native-maps,wannyk/react-native-maps,lelandrichardson/react-native-maps,zigbang/react-native-maps,pjamrozowicz/react-native-maps,wannyk/react-native-maps,pjamrozowicz/react-native-maps,lelandrichardson/react-native-maps,wannyk/react-native-maps,pjamrozowicz/react-native-maps,lelandrichardson/react-native-maps