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.
Changes per code review
Merge pull request #1 from brentschmaltz/dev

OpenId Metadata.
updated assembly info
Newline added to end of file.
Metadata retrieval infrastructure.