Pull ClassMethods in RESTful; Specs
Pull instance methods into RESTful
Library is RESTful, but not a Media; Specs
Pull upload-related logic from RESTful -> new Uploadable Mixin; Specs
Add Module-level comment definitions for RESTful and Uploadable
Spec change to address https://travis-ci.org/Twistage/helix/jobs/5876231

This was not failing locally, which is troubling.