Missing whitepaper and broken doc link

[0xsomnus]

No further explanation is needed. The docs link in the README resolves to a 404. I'm assuming the correct link is https://docs.rari.capital/yag/. There's still no white paper too.

[0xsomnus]

NVM realized why the link is broken. #76

[msmyers]

docs.rari.capital appears to not have dns anymore.