Adding cleaning eeprom

cleaning_sketch/platformio.ini

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+[env:pro8MHzatmega328]
+platform = atmelavr
+framework = arduino
+board = pro8MHzatmega328

cleaning_sketch/src/clear.ino

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+/*
+ * The MySensors Arduino library handles the wireless radio link and protocol
+ * between your home built sensors/actuators and HA controller of choice.
+ * The sensors forms a self healing radio network with optional repeaters. Each
+ * repeater and gateway builds a routing tables in EEPROM which keeps track of the
+ * network topology allowing messages to be routed to nodes.
+ *
+ * Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
+ * Copyright (C) 2013-2015 Sensnology AB
+ * Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors
+ *
+ * Documentation: http://www.mysensors.org
+ * Support Forum: http://forum.mysensors.org
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ *******************************
+ *
+ * DESCRIPTION
+ *
+ * This sketch clears radioId, relayId and other routing information in EEPROM back to factory default
+ *
+ */
+// load core modules only
+#define MY_CORE_ONLY
+
+#include <MySensors.h>
+
+void setup()
+{
+  Serial.begin(MY_BAUD_RATE);
+  Serial.println("Started clearing. Please wait...");
+  for (int i=0; i<EEPROM_LOCAL_CONFIG_ADDRESS; i++) {
+    hwWriteConfig(i,0xFF);
+  }
+  Serial.println("Clearing done. You're ready to go!");
+}
+
+void loop()
+{
+  // Nothing to do here...
+}