Play/pause does not work on wired headphones

[pietrorea]

Tested using the Lightning wired headphones that come with newer iPhones. FYI, @TheLoombot sent a PR fixing this to my fork: pietrorea#2

[micahjon]

Hey @pietrorea, thanks for sharing this! I'll go ahead and add it to my fork as well :)
https://github.com/micahjon/SwiftAudioPlayer