Install The Arduino Ide 1.6.8 Or Greater; Install The Esp8266 Board Package - Adafruit Feather HUZZAH ESP8266 Manual

Download the CP2104 Legacy USB
Driver
https://adafru.it/ymF

Install the Arduino IDE 1.6.8 or greater

Download Arduino IDE from Arduino.cc (1.6.8 or greater) (https://adafru.it/f1P) from
Arduino.cc
The latest is usually the best

Install the ESP8266 Board Package

Enter
http://arduino.esp8266.com/stable/package_esp8266com_index.json
into Additional Board Manager URLs field in the Arduino v1.6.4+ preferences.
Visit our guide for how to add new boards to the Arduino 1.6.4+ IDE for more info
about adding third party boards (https://adafru.it/f7X).
Next, use the Board manager to install the ESP8266 package.
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