Added unread mail count to tmux pane

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

bin/rdio.scpt

@@ -0,0 +1,10 @@
+if application "Rdio" is running then
+  tell application "Rdio"
+    set theName to name of the current track
+    set theArtist to artist of the current track
+    try
+      return "♫  " & theName & " - " & theArtist
+    on error err
+    end try
+  end tell
+end if