Merge ruby-saml-upgrade

Update tests to new ruby-saml api

Upgrade ruby-saml gem to 0.9.2

Update ruby-saml dependency

Merge branch 'release/1.3.1'

Added missing fingerprint key check.

Bumped version to 1.3.1.

Expose fingerprint on the auth_hash.

Merge pull request #35 from tomhipkin/hotfix/ruby-saml-update

Bump ruby-saml to version 0.8.1

Merge pull request #31 from bpedro/feature/validate-idp-certificate-on-callback

Changed omniauth dependency to ~>1.1.

Bumped version to 1.3.0.

Added documentation about idp_cert_fingerprint_validator option.

Added test for the fingerprint validator.