add note about develop

Jason2866 · web-flow · commit efd79290d8a9 · 2024-07-27T21:39:47.000+02:00
diff --git a/README.md b/README.md
@@ -46,6 +46,7 @@ board = ...
 ```
 
 ### Development version
+espressif Arduino repo branch master and latest compiled Arduino libs
 
 ```ini
 [env:development]
