[cli] Run update-notifier just before exiting
[cli] Run update-notifier just before exiting

Bug:

    The notifier running during start makes it intrusive to the user.
    Also, depending on the number of directories being pushed, the
    notification can be easily missed.

Fix:

    Notify the user of any update just before exiting. This ensures
    the user always sees the notification without being intrusive.

forfuturellc/ftpush