I've followed and refollowed those steps on OS X 10.9.1, but this is what happens:

  » docker version
  Client version: 0.8.0
  Go version (client): go1.2
  Git commit (client): cc3a8c8
  2014/02/05 23:10:55 unexpected EOF

Yet the docker server is definitely up:

  docker@boot2docker:~$ docker version
  Client version: 0.8.0
  Go version (client): go1.2
  Git commit (client): cc3a8c8
  Server version: 0.8.0
  Git commit (server): cc3a8c8
  Go version (server): go1.2
  Last stable version: 0.8.0

Tried both `export DOCKER_HOST=tcp://` and `export DOCKER_HOST=localhost` (as per boot2docker README), before re-init.