bump example to react native 0.28
bump example to react native 0.28

zzycami/react-native-audio,jsierles/react-native-audio,jsierles/react-native-audio,jsierles/react-native-audio,RakanNimer/react-native-audio,RakanNimer/react-native-audio,jsierles/react-native-audio,RakanNimer/react-native-audio,zzycami/react-native-audio,zzycami/react-native-audio