[w3c/webauthn] 96bc24: Use |authData| in both RP operations (#892)

  Branch: refs/heads/master
  Home:   https://github.com/w3c/webauthn
  Commit: 96bc24a1ffcd71508e08f20e56c45a9a6994e637
      https://github.com/w3c/webauthn/commit/96bc24a1ffcd71508e08f20e56c45a9a6994e637
  Author: Emil Lundberg <emil@emlun.se>
  Date:   2018-05-02 (Wed, 02 May 2018)

  Changed paths:
    M index.bs

  Log Message:
  -----------
  Use |authData| in both RP operations (#892)

* Replace |aData| and |adata| with |authData|

* Fix #875: cleanup: interstital blank line



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