Added hardcoded 2012-11-05 namespace to responder generated xml.
Made XMLNS used in responses a configurable option.
Added a default value for xmlns to responder if no value is provided.
Removed extra space in responder.
Added test for Responder to ensure that it can generate XML with namespaces.
Merge pull request #1 from glindsay-mdsol/addxmlns

[RTM] Add the Amazon SWS XML Namespace to the XML data returned by the responder