Most folks will read that README and conclude SAML isn't going to happen for them today.

Take any language's biggest SAML implementation, and it's the same story of a library with some epic README covering dozens of public methods you may or may not need to use. People can't make heads or tails of this stuff.

Clarity and simplicity are the precursors to security. I'm pretty obsessed with making SAML clear and simple for folks.