updated README.md

README.md

@@ -3,6 +3,11 @@
 
 Current stable version: 2.5.0
 
+## Documentation
+
+For the full API documentation, view [https://iot.wzl-mq.rwth-aachen.de/documentation/libs/mqtt/](https://iot.wzl-mq.rwth-aachen.de/documentation/libs/mqtt/).
+For using the MQTT Broker of the chair and department specific features, refer to the [internal documention](https://iot.wzl-mq.rwth-aachen.de/documentation/mqtt.html).
+
 ## Installation
 Requires at least Python 3.6
 
@@ -73,10 +78,6 @@ while True:
 Slightly more detailled examples can be found in the *sample* directory.  
 If there are any questions contact [Matthias Bodenbenner](mailto:m.bodenbenner@wzl-mq.rwth-aachen.de).
 
-## Documentation
-
-For more detailed explanation and full API documentation, view [https://iot.wzl-mq.rwth-aachen.de/documentation/libs/mqtt/](https://iot.wzl-mq.rwth-aachen.de/documentation/libs/mqtt/)
-
 ## Changelog
 2.5.0
   - changed signature of connect method