doc: add onboarding documentation
cc @chrisdickinson
This is probably somewhat outdated, in slight disarray and in need of more work and review generally.
Figure it'l at least do better as a PR rather than sitting in chirs's or my gist.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
cc @chrisdickinson
This is probably somewhat outdated, in slight disarray and in need of more work and review generally.
Figure it'l at least do better as a PR rather than sitting in chirs's or my gist.