[w3c/webauthn] 0d0fce: Rename attestationStatement back to just attestati...

  Branch: refs/heads/vgb-u2f-attestation
  Home:   https://github.com/w3c/webauthn
  Commit: 0d0fcea44eb3e2a6a809e95bd892a0ff2e377a9b
      https://github.com/w3c/webauthn/commit/0d0fcea44eb3e2a6a809e95bd892a0ff2e377a9b
  Author: Vijay Bharadwaj <vijaybh@users.noreply.github.com>
  Date:   2017-01-11 (Wed, 11 Jan 2017)

  Changed paths:
    M index.bs

  Log Message:
  -----------
  Rename attestationStatement back to just attestation

This is now the only use of "attestation" so we might as well save bytes
in the authenticator.