document usage and audio formats. closes #71
document usage and audio formats. closes #71

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