I’ve started a
kicad schematic symbol and footprint library for the ESP modules. ESP-01, ESP-07 (the 16 pin version), ESP-12, and ESP-201 are available now.
Additions and corrections are welcome.
The footprints have not been tested on a real PCB yet, so use with
caution.
https://github.com/jdunmire/kicad-ESP8266