Support for custom request builders.
Improved custom builder class resolution a bit.
Added common KOSapi query params to RequestBuilder.
Fixed Guardfile.
Improved ResourceMapper to wrap builders to  delegators.
Separated BuilderDelegator specs into separate contexts based on responsible methods.
RequestBuilderDelegator now replaces builder.self with self when delegating to builder.
Moved shared examples and helper methods to spec/support.
OAuth2 Adapter API refactor.
Added CoursesBuilder.
ParallelsBuilder WIP.
Requires...
HTTP Client API refactoring.
Refactored API Client to use resource builders and delegaros instead of resource modules. (Fluent API support.)