add asl to README.rst

Author: jxmx

README.rst

@@ -184,5 +184,6 @@ List of Distributions using CustomPiOS
 * `My Naturewatch Camera <https://github.com/interactionresearchstudio/NaturewatchCameraServer>`_ - A Python / OpenCV camera server to stream Pi camera content to a remote client through a website.
 * `PiFireOS <https://github.com/calonmerc/PiFireOS>`_ - Distro for pellet grill/smoker control, running `PiFire <https://nebhead.github.io/PiFire>`_.
 * `MonsterPi <https://docs.fdm-monster.net/guides/monsterpi>`_ - An Ubuntu ARM 64bit Raspberry Pi image running `FDM Monster <https://fdm-monster.net/>`_. This 3D Print server will help you connect 200+ OctoPrints together while providing a strong, professional workflow.
+* `AllStarLink <https://allstarlink.org>`_ - AllStarLink is a network of Amateur Radio repeaters, remote base stations and hot spots accessible to each other via Voice over Internet Protocol. The ASL3 Pi Appliance uses CustomPiOS
 
 Code contribution would be appreciated!