Update iTunes.h for iTunes 11.0.4
Move constants from TNNotifier to TNConstants
Add current song title, artist, album and artwork to the menu
Convert project to Modern Objective-C Syntax
Clean up code (re-indent, use dot notation...)
Update current song info width from 225 to 240 to match system notification width
Localize unknown title, artist and album
Fix a bug where the width of the artist and album were based on the title
Update README.md and app version to 1.5