Merge pull request #84 from DanSmith/master

Update htaccess for content negotiation and validation fixes for the document
Update .htaccess

Changed RDF file extension from .xml to .rdf. Spec recommends .rdf, see: http://www.w3.org/TR/rdf-syntax-grammar/#section-MIME-Type
Update build.bat

Changed RDF file extension from .xml to .rdf. Spec recommends .rdf, see: http://www.w3.org/TR/rdf-syntax-grammar/#section-MIME-Type
.xml to .rdf

Changed RDF file extension from .xml to .rdf. Spec recommends .rdf, see: http://www.w3.org/TR/rdf-syntax-grammar/#section-MIME-Type
Merge pull request #1 from linked-statistics/master

sync with upstream