Describe how to process big checkins
Summary:
I was asked question about this twice this week.
I will link the section from ArcanistDiffWorkflow afterwards.
NOTE: I believe that I read these instructions somewhere but I couldn't find it.
Test Plan: Read.
Reviewers: epriestley, btrahan
Reviewed By: epriestley
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D3313