Added SAML login
Merge pull request #105 from cloudfoundry/saml_login

SAML Login server to allow users to authenticate using SAML
restructure gorouter package

* vendor its dependencies here instead of in gorouter
* update packaging script
update_sub: support bumping submodules under any path

don't look at this commit's changes

just trust it
Bump src/gorouter/src/github.com/rcrowley/go-metrics:

Richard Crowley (1):
      Update docs.
switched saml_login to use cf-registrar