Added the Sequence Ontology Feature Annotation (SOFA) Ruby class abstraction.
Added the Sequence Ontology Feature Annotation (SOFA) Ruby class abstraction.

BioInterchange/BioInterchange,BioInterchange/BioInterchange,BioInterchange/BioInterchange,BioInterchange/BioInterchange,BioInterchange/BioInterchange,BioInterchange/BioInterchange