I just downloaded Kirby CLI through the github instructios and I got to this screen:
Why is thekirby command not found? How do I install the CLI correctly?
Have you installed it globally? Otherwise, you have to add it to your path.
How do I add it to my path?
Google is your friend: http://osxdaily.com/2014/08/14/add-new-path-to-path-command-line/