A thin wrapper around AVAudioSession, currently only supporting:
AVAudioSession setCategory: error:
AVAudioSession setCategory: withOptions: error:
cordova plugin add https://github.com/maxcabral/CDVAudioSession
window.plugins.audioSession.setCategoryAndOptions('AVAudioSessionCategoryPlayback',
'AVAudioSessionCategoryOptionDuckOthers|AVAudioSessionCategoryOptionAllowBluetooth')