Implemented Rake task for the test data RDF/XML -> N-Triples format conversion.
Implemented Rake task for the test data RDF/XML -> N-Triples format conversion.

git-svn-id: 507fc86cc8d4504f3ade1c8626c0daba8b529891@17 581c2db1-bd1c-4451-8d2a-08a47a0b6355

PerfectMemory/rdf,jcoyne/rdf,ruby-rdf/rdf,ninjapanzer/rdf