Finish RDF1.1.
This completes issue #21
Add the Google Group Link
Update specs to use real vocabulary terms in tests; RDF.rb now uses StrictVocabulary for pre-defined vocabularies, which prohibits use of undefined terms.
Update relations_spec to expect syntax do fix RBX issue.
Support for RBX >= 2.1.0.
Set VERSION to 1.1.0.
Finish 1.1.0