Merge branch 'saml-enforce-groups'

saml/saml.go

vendor/github.com/crewjam/saml/Gopkg.lock

vendor/github.com/crewjam/saml/NOTES.md

vendor/github.com/crewjam/saml/README.md

vendor/github.com/crewjam/saml/identity_provider.go

vendor/github.com/crewjam/saml/saml.go

vendor/github.com/crewjam/saml/saml_gen.go

vendor/github.com/crewjam/saml/schema.go

vendor/github.com/crewjam/saml/service_provider.go

vendor/github.com/crewjam/saml/time.go

vendor/github.com/crewjam/saml/xmlenc/pubkey.go

vendor/vendor.json