update js interface for onUserLocationChange results
update js interface for onUserLocationChange results

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