[manifest] Add related_applications and prefer_related_applications. (#344)

Fixes issue 326.
You can view, comment on, or merge this pull request online at:

  https://github.com/w3c/manifest/pull/344

-- Commit Summary --

  * Add related_applications and prefer_related_applications.

-- File Changes --

    M index.html (274)

-- Patch Links --

https://github.com/w3c/manifest/pull/344.patch
https://github.com/w3c/manifest/pull/344.diff

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Reply to this email directly or view it on GitHub:
https://github.com/w3c/manifest/pull/344