when using repo.remove('gh-pages', 'file that exists', function(err) { console.error(err); }); I get the following error and callstack:

Uncaught TypeError: Cannot call method 'reject' of undefined -- github.js:532
(anonymous function) -- github.js:532
(anonymous function) -- github.js:347

I was trying to effect a "repo.replace" by first removing a file I know exists in the tree using repo.remove and then calling repo.write to put in a new copy with updated information, but the remove throws this error.

It appears that the _ var in https://github.com/michael/github/blob/master/github.js#L532 does not actually point to anything.