add force parameter defaulted to false to control reset behavior
add a github_repo type to check out github repos
add repos_for function

Uses Octokit to return an array of repos for a given user. If the given user
is you, it will return all repos that you own. Otherwise, just public repos.
tests for repos_for()

cardboard doesn't allow octokit2, rspec-puppet hasn't been released for 9 months.

yay computers.