This pull request addresses issues with GitHub team creation and defensive coding around this edge case.

It looks like the issue is due to an uncaught exception being raised when trying to create a new GitHub team with a given parent team and that parent team does not exist. Think of it like the bash mkdir -p command. If the parent team doesn't exist, we should create it so that the child team can also be created.

This PR essentially enables team creation to be handled with the same logic as mkdir -p in bash.

related: #54

note: when I saved in my editor, it forced rubocop to run which is why you see a fair amount of linting changes here 😞