Update + fix docs
[#470] removed the duplicated `audioCodecs` and redefined `me.device.sound` to return the global Howler `noAudio` flag
[#470] added the modified version of Howler with CocoonJS compatiblity fix !
fixed the `stopTrack` function (was pausing and not stopping the current sound)
removed unnecessary code, as Howler will automatically stop any playing instances
Merge remote-tracking branch 'upstream/master'