Update README.md

Author: yaapu

README.md

@@ -2,6 +2,10 @@
 
 This is the home of the Yaapu Telemetry Script project, a [LUA](https://www.lua.org/about.html) telemetry script for radios running [OpenTX](https://www.open-tx.org/)
 
+- latest stable is 1.8.1
+- latest Taranis beta is 1.9.1
+- latest Horus beta is 1.9.3
+
 ### please read the [wiki](https://github.com/yaapu/FrskyTelemetryScript/wiki) for more info