added password for updating firmware ota

otasta/otasta.ino

@@ -37,9 +37,15 @@
     Serial.print("IP address: ");
     Serial.println(WiFi.softAPIP());
 
+    //Over-the-Air updates
+    ArduinoOTA.setHostname("ESP8266");
+    ArduinoOTA.setPassword("change-me");
     ArduinoOTA.begin();
+    
+    //File system begin
     SPIFFS.begin();
 
+
      //redirect all traffic to index.html
   server.onNotFound([]() {
     if(!handleFileRead(server.uri())){