The vcsrepo module
I managed to work around several issues with the course material (the reality of things that your steps pull down aren't always compatible w/ the version of ruby your material requires) ... but I have now struck a dead-end.
The version of vcsrepo (1.2.0) in use in your course is no longer compatible w/ github. Github tells me to update my git client:
Please upgrade your git client.
GitHub.com no longer supports git over dumb-http: removed link
Any idea where to from here?