update readme

Config.h.save

@@ -1,6 +0,0 @@
-#pragma once
-
-#define NUKI_HUB_VERSION "8.13"
-
-#define MQTT_QOS_LEVEL 1
-#define MQTT_CLEAN_SESSIONS false

README.md

@@ -187,8 +187,11 @@ The Pin configuration is:<br>
 
 ## Connecting via LAN (Optional)
 
-If you prefer to connect to the MQTT Broker via LAN instead of WiFi, you can use a Wiznet W5x00 Module (W5100, W5200, W5500 are supported).
-To connect, just wire the module and connect the LAN cable:
+If you prefer to connect to the MQTT Broker via LAN instead of WiFi, you either use one of the supported ESP32 modules (see about section above),
+or wire a seperate Wiznet W5x00 Module (W5100, W5200, W5500 are supported). To use a supported module, flash the firmware, connect via Wifi and
+select the correct network hardware in the MQTT and network settings section.<br><br>
+
+To wire an external W5x00 module to the ESP, use this wiring scheme:<br><br>
 
 - Connect W5x00 to ESP32 SPI0:<br>
 W5x00 SCK to GPIO18<br>
@@ -199,10 +202,10 @@ W5x00 CS/SS to GPIO5
 W5x00 reset to GPIO33
 - Last but not least, on the ESP32 bridge GPIO26 and GND. This let's the firmware know that a LAN Module is connected
 
-Wifi is now disabled, and the module doesn't boot into WifiManager anymore.
-
-As an alternative to do the wiring yourself, you can use an [M5Stack Atom POE](https://docs.m5stack.com/en/atom/atom_poe).
-After flashing, go to MQTT and network settings and select the module under "Network hardware".
+Wifi is now disabled, and the module doesn't boot into WifiManager anymore.<br>
+Note: Encrypted MQTT is only available for Wifi and LAN8720 modules, W5x00 modules don't support encryption 
+(that leaves Olimex, WT32-ETH01 and M5Stack PoESP32 Unit if encryption is desired). If encryption is needed, Olimex
+is the easiest option, since it has USB for flashing onboard.
 
 ## Troubleshooting