R1:744215d5ffe4

Add Herald Adapters to Phame

Summary: Adds a basic HeraldAdapter to Phame Blogs and Posts.

Test Plan: Make a Herald rule to CC me on new posts or blogs automatically.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D14897