The main purpose of this update is to make sure the guide still works with the newest version of all software. In running through the guide I found places to make bug fixes and minor improvements.
cri-containerd project is moving as a sub-project of containerd itself;
the GitHub migration is complete. Also, as of 9 Jan, the beta.1 release
of cri-containerd is available so the download link is updated.
Signed-off-by: Phil Estes <estesp@gmail.com>