Update README.md

Author: HochdruckHummer

README.md

@@ -4,6 +4,11 @@ Created by Daniel Beckemeier, DO8YDP
 
 This Javascript imports QSO numbers to ioBroker objects. This data can then be used to visualize it, for example to push it to Awtrix devices for example. 
 
+## Compatibility
+
+This script needs at least Wavelog version 2.0.1. to work, as there was an API implemented for this tool.
+
+
 ## Installation:
 
 1. Create the following objects underneath the Javascript-Adapter-objects in io.Broker: