Added APRS document references

KEYWORDS

@@ -1,5 +1,6 @@
 Alerts
 Apprise API
+Automated Packet Reporting System
 AWS
 Boxcar
 BulkSMS

README.md

@@ -57,6 +57,7 @@ The table below identifies the services this tool supports and some example serv
 | Notification Service | Service ID | Default Port | Example Syntax |
 | -------------------- | ---------- | ------------ | -------------- |
 | [Apprise API](https://github.com/caronc/apprise/wiki/Notify_apprise_api)  | apprise:// or apprises:// | (TCP) 80 or 443 | apprise://hostname/Token
+| [Automated Packet Reporting System (ARPS)](https://github.com/caronc/apprise/wiki/Notify_aprs)  | aprs:// | (TCP) 10152 | aprs://user:pass@/Target<br/>aprs://user:pass@/Target1/Target2/TargetN
 | [AWS SES](https://github.com/caronc/apprise/wiki/Notify_ses)  | ses://   | (TCP) 443   | ses://user@domain/AccessKeyID/AccessSecretKey/RegionName<br/>ses://user@domain/AccessKeyID/AccessSecretKey/RegionName/email1/email2/emailN
 | [Bark](https://github.com/caronc/apprise/wiki/Notify_bark)  | bark://   | (TCP) 80 or 443   | bark://hostname<br />bark://hostname/device_key<br />bark://hostname/device_key1/device_key2/device_keyN<br/>barks://hostname<br />barks://hostname/device_key<br />barks://hostname/device_key1/device_key2/device_keyN
 | [Boxcar](https://github.com/caronc/apprise/wiki/Notify_boxcar)  | boxcar://   | (TCP) 443   | boxcar://hostname<br />boxcar://hostname/@tag<br/>boxcar://hostname/device_token<br />boxcar://hostname/device_token1/device_token2/device_tokenN<br />boxcar://hostname/@tag/@tag2/device_token