Update 06-github

[hot007]

GitHub has recently changed the interface at the time of repo creation to prompt creation of license, readme etc.
Also note GitHub seems to be pushing strongly toward use of SSH keys. I think if we can avoid it we should to keep this conceptually simple (ie avoid keys), but I think it would be good for @DamienIrving to update this lesson with new screenshots to ensure it's accurate with the current GitHub interface, and maybe mention why SSH keys are good for security.

[DamienIrving]

Thanks, @hot007. I'll update those screen shots like you suggest 👍