[w3c/webauthn] 4fbfa4: Clarify Android attestation procedure

  Branch: refs/heads/vijaybh/61-buffers
  Home:   https://github.com/w3c/webauthn
  Commit: 4fbfa4c315e679e2d29e9cee661049b165938898
      https://github.com/w3c/webauthn/commit/4fbfa4c315e679e2d29e9cee661049b165938898
  Author: Vijay Bharadwaj <vijaybh@users.noreply.github.com>
  Date:   2016-05-01 (Sun, 01 May 2016)

  Changed paths:
    M index.src.html

  Log Message:
  -----------
  Clarify Android attestation procedure