Arduino Programmer for ESP8266
Upload the sketch to your Arduino (Nano v3.0 / Ide 1.8.1 or latter: https://www.arduino.cc/en/main/software) and connect ESP8266 to Nano board (see Schematic.pdf).
This work is based on code http://tuanpm.net/rock-solid-esp8266-wifi-mqtt-restful-client-for-arduino/ - https://github.com/tuanpmt/espduino Thanks, Tuan PM