RepoSnapshots.jl - Take "snapshots" of the main branches of every repository in a GitHub organization

RepoSnapshots.jl is a Julia application for taking "snapshots" of the main branches of every repository in a GitHub organization.

RepoSnapshots.jl (and its sibling project, MirrorUpdater.jl) are used to maintain the Julia package mirrors and snapshots hosted at:

	Mirrors	RepoSnapshots
GitHub	https://github.com/UnofficialJuliaMirror	https://github.com/UnofficialJuliaMirrorSnapshots
GitLab	https://gitlab.com/UnofficialJuliaMirror	https://gitlab.com/UnofficialJuliaMirrorSnapshots
Bitbucket	https://bitbucket.org/UnofficialJuliaMirror	https://bitbucket.org/UnofficialJuliaMirrorSnapshots

TODO: Write instructions