minor changes

src/DidacticNet.h

@@ -8,10 +8,12 @@
 #define _DIDACTICNET_
 
 #include "Arduino.h"
-//callback(topic, topicLength, data, dataLength)
+
 #ifdef CALLBACK_W_LENGTH	 
+	//callback(topic, topicLength, payload, payloadLength)
 	#define PSNET_CALLBACK_SIGNATURE void (*callback)(char*, int, char*, int)
 #else
+	//callback(topic, payload)
 	#define PSNET_CALLBACK_SIGNATURE void (*callback)(char*, char*)
 #endif