Drop duplicate and alphabetize notifications

README.md

 
 * [JoliNotif](https://github.com/jolicode/JoliNotif) - A cross-platform library for desktop notification (support for Growl, notify-send, toaster, etc)
 * [Nod](https://github.com/filp/nod) - A notification library (e.g., Growl).
-* [Notificato](https://github.com/mac-cain13/notificato) - A library for handling push notifications.
 * [Notification Pusher](https://github.com/Ph3nol/NotificationPusher) - A standalone library for device push notifications.
+* [Notificato](https://github.com/mac-cain13/notificato) - A library for handling push notifications.
 * [Notificator](https://github.com/namshi/notificator) - A lightweight notification library.
-* [JoliNotif](https://github.com/jolicode/JoliNotif) - An OS agnostic desktop notification library.
 
 ## Deployment
 *Libraries for project deployment.*