[w3c/webauthn] c19327: Add examples of how user might be identified

  Branch: refs/heads/pr-1082-user-handle-mapped
  Home:   https://github.com/w3c/webauthn
  Commit: c19327d6f8646f16f50a19c101140f8fcc852922
      https://github.com/w3c/webauthn/commit/c19327d6f8646f16f50a19c101140f8fcc852922
  Author: Emil Lundberg <emil@yubico.com>
  Date:   2018-10-01 (Mon, 01 Oct 2018)

  Changed paths:
    M index.bs

  Log Message:
  -----------
  Add examples of how user might be identified



      **NOTE:** This service has been marked for deprecation: https://developer.github.com/changes/2018-04-25-github-services-deprecation/

      Functionality will be removed from GitHub.com on January 31st, 2019.