Convert conventially cloned repostiory

[nomeata]

It is very convenient to use

git clone git@github.com:upstream/repo

and start hacking, only to later regret that I should have used

 git hub clone  -t upstrema/repo

instead. Or maybe I have had cloned these repositories before starting to use git-hub.

It would be great if

git hub clone -t

in an already-cloned repository would

• Figure out the upstream repository based on git remote.
• Create a clone on GitHub
• Set up the fork remote accordingly, if -t is specified.

[nomeata]

This is related to #158, which asks for converting a git-hub-created repository into a triangular one. My request goes a bit further in that it starts with a non-git-hub-aware repository.

[joshtriplett]

I'd love to have this as well; I regularly encounter this situation, when I started out cloning a repository to experiment with it and then later wanting to contribute to it.

[nomeata]

I think it is possible to do this manually (clone on github, add the git remote, set the hub.upstream and hub.forkremote git configs). But automation would be better :-)

[joshtriplett]

@nomeata It's certainly possible, just tedious and error-prone.