[webauthn] new commits pushed by rlin1

The following commits were just pushed by rlin1 to https://github.com/w3c/webauthn:

* add explanation: where does signature come from
  by rlin1
https://github.com/w3c/webauthn/commit/8c2bfd70057b3e958532a89b10f6cf48cf462fa6

Received on Wednesday, 30 August 2017 17:32:57 UTC