Various documentation updates focused around surfacing feedback article

Summary:
missed doing this for phame, so i poked around a bit and added it to
similar verbage as well as to a few "Next Steps" where I thought the feedback
might be provocative.

Test Plan: read the docs

Reviewers: vrana, epriestley

Reviewed By: epriestley

CC: aran

Differential Revision: https://secure.phabricator.com/D2220