notes:
lirc_rmi parameters MUST be set in /boot/config.txt, modprobe options are ignored.

https://developer.amazon.com/public/solutions/alexa/alexa-skills-kit/docs/developing-an-alexa-skill-as-a-lambda-function

LIRC:
http://www.raspberry-pi-geek.com/Archive/2015/10/Raspberry-Pi-IR-remote
http://www.raspberry-pi-geek.com/Archive/2014/03/Controlling-your-Pi-with-an-infrared-remote

http://alexba.in/blog/2013/01/06/setting-up-lirc-on-the-raspberrypi/

https://www.raspberrypi.org/documentation/usage/gpio/