OpenId Metadata.
Add support for stream, file.
Add support for JsonWebKeys
Add additional tests.
Removed Variations of ValidateToken other than ValidateToken(string, TokenValidationParameters)
Removed 'underscores' in method, properties and constants
Added new Exceptions to standardize throws from Saml, Saml2, Jwt (still work to do here)
Fixed copyright in assembly, nuspec
Cleaned up some test code.