MQTT Support Added (#443)

README.md

@@ -55,6 +55,7 @@ The table below identifies the services this tool supports and some example serv
 | [Matrix](https://github.com/caronc/apprise/wiki/Notify_matrix) | matrix:// or matrixs://  | (TCP) 80 or 443 | matrix://hostname<br />matrix://user@hostname<br />matrixs://user:pass@hostname:port/#room_alias<br />matrixs://user:pass@hostname:port/!room_id<br />matrixs://user:pass@hostname:port/#room_alias/!room_id/#room2<br />matrixs://token@hostname:port/?webhook=matrix<br />matrix://user:token@hostname/?webhook=slack&format=markdown
 | [Mattermost](https://github.com/caronc/apprise/wiki/Notify_mattermost) | mmost:// or mmosts:// | (TCP) 8065 | mmost://hostname/authkey<br />mmost://hostname:80/authkey<br />mmost://user@hostname:80/authkey<br />mmost://hostname/authkey?channel=channel<br />mmosts://hostname/authkey<br />mmosts://user@hostname/authkey<br />
 | [Microsoft Teams](https://github.com/caronc/apprise/wiki/Notify_msteams) | msteams://  | (TCP) 443   | msteams://TokenA/TokenB/TokenC/
+| [MQTT](https://github.com/caronc/apprise/wiki/Notify_mqtt) | mqtt://  or mqtts:// | (TCP) 1883 or 8883   | mqtt://hostname/topic<br />mqtt://user@hostname/topic<br />mqtts://user:pass@hostname:9883/topic
 | [Nextcloud](https://github.com/caronc/apprise/wiki/Notify_nextcloud) | ncloud:// or nclouds:// | (TCP) 80 or 443 | ncloud://adminuser:pass@host/User<br/>nclouds://adminuser:pass@host/User1/User2/UserN
 | [Notica](https://github.com/caronc/apprise/wiki/Notify_notica) | notica://  | (TCP) 443   | notica://Token/
 | [Notifico](https://github.com/caronc/apprise/wiki/Notify_notifico) | notifico://  | (TCP) 443   | notifico://ProjectID/MessageHook/