A couple of people have asked for this in comments (and someone reported it on GitHub as well). I don't have a deployment handy so it's hard to build out. I hope someone can submit a PR. (Or wait until I can get a deployment to build/test.)
I suspect that our enterprise installation uses a different API version than the live Github site, as I am having a hard time figuring out what an error 406 (vs the ones you catch) means. (And, the tree that I get is undefined.)
I'm surely doing something wrong. (I had hacked up the github.js library to use `github.ourcompany.com` for its API domain, which is probably wrong.) I will have to look for more info on API access to enterprise instances, because this is a feature which would make reading our various codebases __much__ more convenient.
Thank you for such an inspiring plugin!