Demo - First release of an minimal emacs editor clone for esp8266

It has basic emacs editing commands, see the readme.

Actually, since it currently doesn't have any filesystem, you can only edit the README.md file of the github. Haha!

To flash it,

     esptool.py -p /dev/ttyUSB0 --baud 115200 write_flash -fs 16m -fm qio -ff 40m 0x40000 ./firmware/0x40000.bin 0x00000 ./firmware/0x00000.bin