[Snek] [keith-packard/snek] dc84b9: Add contributor covenant

[Keith Packard]

  Branch: refs/heads/master
  Home:   https://github.com/keith-packard/snek
  Commit: dc84b9075b632b1a9b6d5f6cd283228affea4a9c
      https://github.com/keith-packard/snek/commit/dc84b9075b632b1a9b6d5f6cd283228affea4a9c
  Author: Keith Packard <keithp at keithp.com>
  Date:   2019-06-10 (Mon, 10 Jun 2019)

  Changed paths:
    A CODE_OF_CONDUCT.md

  Log Message:
  -----------
  Add contributor covenant

Signed-off-by: Keith Packard <keithp at keithp.com>