[Snek] [keith-packard/snek] b69397: Add install target for snekde

[Keith Packard]

  Branch: refs/heads/master
  Home:   https://github.com/keith-packard/snek
  Commit: b693975ba9145753d56c0e2e666c86e0fd22aa9f
      https://github.com/keith-packard/snek/commit/b693975ba9145753d56c0e2e666c86e0fd22aa9f
  Author: Keith Packard <keithp at keithp.com>
  Date:   2019-02-13 (Wed, 13 Feb 2019)

  Changed paths:
    M Makefile
    A snekde/Makefile

  Log Message:
  -----------
  Add install target for snekde

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