[paymentrequest] Add skeleton of basic card spec and tidy-up API spec (#63)

Fixes #53, #55, #56, #59, #60.
You can view, comment on, or merge this pull request online at:

  https://github.com/WICG/paymentrequest/pull/63

-- Commit Summary --

  * Add skeleton of basic card spec and tidy-up API spec

-- File Changes --

    M index.html (100)
    A specs/basic-card-payment.html (190)
    M specs/paymentrequest.html (36)

-- Patch Links --

https://github.com/WICG/paymentrequest/pull/63.patch
https://github.com/WICG/paymentrequest/pull/63.diff

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Reply to this email directly or view it on GitHub:
https://github.com/WICG/paymentrequest/pull/63