Updated Supported Notifications (markdown)

Supported-Notifications.md

@@ -2,6 +2,8 @@
 
 ### [Boxcar](https://boxcar.io/)
 
+### [Custom Script](https://github.com/Radarr/Radarr/wiki/Custom-Post-Processing-Scripts)
+
 ### [Discord](https://discord.com/)
 
 ### [DiscordNotifer.com](https://discordnotifier.com/)
@@ -12,47 +14,46 @@ If you're using Gmail and have 2-factor authentication enabled you need to use a
 
 ### [Embry](https://emby.media/)
 
-
-### [Pushalot](https://pushalot.com/)
-
-### PushBullet
-
-Website: https://www.pushbullet.com/
-
-### NotifyMyAndroid
-
-Website: http://www.notifymyandroid.com/
-
-### Pushover
-
-Website: https://pushover.net/
-
 ### [Growl](http://growl.info/) 
 
 Legacy v0.2 only
 
-### Prowl
+### [Gotify](https://gotify.net/)
 
-Website: http://www.prowlapp.com/
+### [Join](https://joaoapps.com/join/)
 
+### [Kodi](https://kodi.tv/)
 
-### Telegram
+Formally known as XBMC
 
-Website: https://telegram.org/
+### [PlexServer](https://plex.tv/)
 
-## Media Centers
+### [PlexClient](https://plex.tv/)
 
-### Kodi (XBMC)
+Legacy v0.2 only
 
-Website: https://kodi.tv/
+### [Prowl](https://www.prowlapp.com/)
 
-### PlexServer
+### [Pushalot](https://pushalot.com/)
 
-Website: https://plex.tv/
+Legacy v0.2 only
 
-### PlexClient
+### [PushBullet](https://www.pushbullet.com/)
 
-Website: https://plex.tv/
+### [NotifyMyAndroid](http://www.notifymyandroid.com/)
 
-## Others
+Legacy v0.2 only
 
+### [Pushover](https://pushover.net/)
+
+### [Slack](https://slack.com/)
+
+###[SynologyIndexer](https://www.synology.com/en-global/knowledgebase/DSM/help/DSM/AdminCenter/application_indexservice_desc)
+
+### [Telegram](https://telegram.org/)
+
+### [Trakt](https://trakt.tv/)
+
+### [Twitter](https://twitter.com)
+
+### [Webhook]