libtorc-core: Refactor TorcCocoa
libtorc-core: Missed in previous commit
libtorc-core: Remove old file.
libtorc-core: Document TorcDecoder
libtorc-core: Rename DecoderFactory to TorcDecoderFactory for
consistency
libtorc-core: Document TorcEvent
libtorc-core: Convert TorcEvent::Event to TorcEvent::GetEvent