[push-api] Protocol updates (#154)

This updates the adopted IETF work and removes some of the vestigal text from the days before we decided to have a protocol.
You can view, comment on, or merge this pull request online at:

  https://github.com/w3c/push-api/pull/154

-- Commit Summary --

  * Updating to reference IETF protocol
  * More cleanup of text around protocol use

-- File Changes --

    M index.html (66)

-- Patch Links --

https://github.com/w3c/push-api/pull/154.patch
https://github.com/w3c/push-api/pull/154.diff

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Reply to this email directly or view it on GitHub:
https://github.com/w3c/push-api/pull/154