Changes
[https://github.com/nodemcu/nodemcu-firmware NodeMcu] is a great higher level interface and easier to use than the default one.
http://hackaday.com/2015/03/18/how-to-directly-program-an-inexpensive-esp8266-wifi-module/
=== Flashing ===
How to talk to your RPi (and wiring) [http://www.extragsm.com/blog/2014/12/03/connect-esp8266-to-raspberry-pi/]
