Added unread mail count to tmux pane

Unread mail count comes from an AppleScript that asks Mail.app

bin/itunes.scpt

@@ -0,0 +1,12 @@
+if application "iTunes" is running then
+  tell application "iTunes"
+    if exists current track then
+      set theName to the name of the current track
+      set theArtist to the artist of the current track
+      try
+        return "♫  " & theName & " - " & theArtist
+      on error err
+      end try
+    end if
+  end tell
+end if