Support endpoints that return objects in _requestAllPages

[jeffstieler]

Currently, if you call _requestAllPages on an endpoint that returns an object, like /search/, you won't get any results back.

This is due to the handling of the result object - it's assumed it will be an array.

See: https://github.com/michael/github/blob/master/github.js#L124