Add notifications

[TylerJDev]

Add notification for each track
When a user is listening to a track, there is no notification of what song is currently playing, nor when a song has changed.

I could implement a notification system, which would allow the following features.

Features
Utilizing Chromes notification api, I could implement the following:

• Notifications on each track change.
• Allow notification pane to contain previous and next track buttons.

Notes
I should ensure that this is a feature that a user can turn on and off.