Added :type to ActiveFedora::QualifiedDublinCoreDatastream::DCTERMS.
Presumably this field was excluded due to Object#type from Ruby 1.8.
Since AF currently requires >= Ruby 1.9.3, it appears safe to add this DC 1.1 element.
Merge pull request #137 from dchandekstark/add_type_to_dcterms

Added :type to ActiveFedora::QualifiedDublinCoreDatastream::DCTERMS.