Version of the code for ESP8266

Needed material and librairies

Tested on adafruit HUZZAH : https://learn.adafruit.com/adafruit-feather-huzzah-esp8266/pinouts With ARDUINO 1.6.6 with esp8266 1.6.5 package. I actually have issue with version 2.0.0 (warning: espcomm_sync failed, error: espcomm_open failed)

Possibles bugs

IF you encounter an error with __ieee754_sqrt : The issue is known here:

• https://github.com/esp8266/Arduino/issues/612 The solution is to download
• https://files.gitter.im/esp8266/Arduino/Abqa/libm.a.tbz and replace the one in
• C:\Users\xxxxx\AppData\Local\Arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\1.20.0-26-gb404fb9\xtensa-lx106-elf\lib