`docker login` in 1.7 produces a config file in `~/docker/config.json`
instead of a `~/.dockercfg`.
Signed-off-by: Nate Brennand <nate.brennand@clever.com>
Adding in other areas per comments
Updating with comments; equalizing generating man page info
Updating with duglin's comments
Doug is right here again;fixing.
Signed-off-by: Mary Anthony <mary@docker.com>