Use MPNowPlayingInfoCenter to player info

[aussiegeek]

This means that the notications bar media player will show track & artist title, as well as artwork for the album.

It also means that Play/Pause/Next/Previous work without needing accessibility access

[aussiegeek]

Note that I'm fairly new to Swift, and have never used ReSwift, so realise there could be a much better way of doing this