[w3c/webauthn] f536c6: Fixed spelling, grammar, and document syntax issue...

  Branch: refs/heads/master
  Home:   https://github.com/w3c/webauthn
  Commit: f536c622601494e884894ac8f18324b8e30670e5
      https://github.com/w3c/webauthn/commit/f536c622601494e884894ac8f18324b8e30670e5
  Author: Mike Jones <Michael.Jones@microsoft.com>
  Date:   2016-09-01 (Thu, 01 Sep 2016)

  Changed paths:
    M index.bs

  Log Message:
  -----------
  Fixed spelling, grammar, and document syntax issues (#187)