Add to possibility to use GPIO 1&3

On ESP01, Serial won't be available anymore

WiFiAccessPointConfigurator/WiFiAccessPointConfigurator.ino

@@ -9,6 +9,8 @@
 /*  "Flash Size" Menu. Use espota.py to upload OTA                 */
 /* After passing in OTA mode, next boot will be in setup mode      */
 
+/* To Use GPIO 3 And 1, uncomment #define ENABLE_EXTRA_GPIO        */
+/*  but Serial will be available on GPIO 15 and 13                 */
 
 #include <ESP8266WiFi.h>
 #include <WiFiClient.h>
@@ -18,7 +20,11 @@
 #include <ArduinoOTA.h>
 #include <errno.h>
 
+
+//#define ENABLE_EXTRA_GPIO
+
 #define EEPROM_SIZE 512
+
 char eeprom[EEPROM_SIZE];
 
 #define BOOTMODE_SETUP  0
@@ -279,7 +285,9 @@ void setup() {
   Serial.swap(); //Switch Serial on GPIO 13 & 15
   pinMode(3, INPUT_PULLUP);
   int txStatus = digitalRead(3);
-  Serial.swap(); // Switch back
+#ifndef ENABLE_EXTRA_GPIO
+  Serial.swap(); // Switch back on GPIO 1 & 3
+#endif
 
   EEPROM.begin(EEPROM_SIZE);
   readEEPROM(mode, &confSsid, &confPassword, &confHost);