ZWAudioTools provides useful basic player and recorder functionalities.
you can recorder the voice，
also you can play audio ，
the most important things is that it is a tool class，
it is simple to use in your App，if you want to recorder and play audio。
using UIDeviceProximityStateDidChangeNotification、AVAudioSessionInterruptionNotification、AVAudioSessionRouteChangeNotification for Light induction and headSet
