Added options for Auto Node discovery

Optimized strings (no string both F() and raw)

wled00/dmx.cpp

@@ -62,10 +62,6 @@ void initDMX() {
   dmx.init(512);        // initialize with bus length
 }
 
-#if (LEDPIN == 2)
-  #pragma message "Pin conflict compiling with DMX and LEDs on pin 2. Please set a different LEDPIN."
-#endif
-
 #else
 void handleDMX() {}
 void initDMX() {}