Update biblio.js XMLDSIG-PROPERTIES entry

URL should be REC and so should status
Merge branch 'develop' of github.com:fhirsch/respec into develop
need to bring in sync with remote
Merge branch 'develop' of git://github.com/darobin/respec into develop
add RFC 6931
Merge pull request #1 from fhirsch/xmlsec-biblio-fix

add RFC 6931
Merge pull request #206 from fhirsch/develop

add RFC 6931