message: docs: update COMITTER.md with info about pullapprove.com
diff: @@ -6,29 +6,16 @@ for details about how we maintain a linear commit history, and the rules for com
  As a contributor, just read the instructions in [CONTRIBUTING.md](CONTRIBUTING.md) and send a pull request.
  Someone with committer access will do the rest.
  -## The `PR: merge` label and `presubmit-*` branches
  +# Change approvals
  -We have automated the process for merging pull requests into master. Our goal is to minimize the disruption for
  -Angular committers and also prevent breakages on master.
  +Change approvals in our monorepo are managed via [pullapprove.com](https://about.pullapprove.com/) and are configured via the `.pullapprove.yaml` file.
  -When a PR has `pr_state: LGTM` and is ready to merge, you should add the `pr_action: merge` label.
  -Currently (late 2015), we need to ensure that each PR will cleanly merge into the Google-internal version control,
  -so the caretaker reviews the changes manually.
  -After this review, the caretaker adds `zomg_admin: do_merge` which is restricted to admins only.
  -A robot running as [mary-poppins](https://github.com/mary-poppins)
  -is notified that the label was added by an authorized person,
  -and will create a new branch in the angular project, using the convention `presubmit-{username}-pr-{number}`.
  +# Merging
  -(Note: if the automation fails, committers can instead push the commits to a branch following this naming scheme.)
  +Once a change has all the approvals either the last approver or the PR author (if PR author has the project collaborator status) should mark the PR with "PR: merge" label.
  +This signals to the caretaker that the PR should be merged.
  -When a Travis build succeeds for a presubmit branch named following the convention,
  -Travis will re-base the commits, merge to master, and close the PR automatically.
  +# Who is the Caretaker?
  -Finally, after merge `mary-poppins` removes the presubmit branch.
  -
  -## Administration
  -
  -The list of users who can trigger a merge by adding the `zomg_admin: do_merge` label is stored in our appengine app datastore.
  -Edit the contents of the [CoreTeamMember Table](
  -https://console.developers.google.com/project/angular2-automation/datastore/query?queryType=KindQuery&namespace=&kind=CoreTeamMember)
  +See [this explanation](https://twitter.com/IgorMinar/status/799365744806854656).
  