Revert "Merge branch 'bring-old-readme-back' into 'master'"
Now that https://gitlab.com/gitlab-com/gitlab-docs/merge_requests/11 is merged, we can bring the new readme back.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Now that https://gitlab.com/gitlab-com/gitlab-docs/merge_requests/11 is merged, we can bring the new readme back.