Added appropriate code to allow one function to handle both subscribe and unsubscribe requests.
Updated code.
Updated message because it will be used for both subscribe and unsubscribe sucessful attempts.
Added unsubscribe function.
Added unsubscribe link, rearranged overall menu.
Renamed example welcome attachment file that will be sent with new newsletter subscriptions.
Removed from repo.  No longer needed.
Unsubscribe form.
Updated
Merge remote-tracking branch 'refs/remotes/origin/master'

Conflicts:
	README.md