Repo/Misc: Update README file.
Since this project right here is 4.3.4 only, I suggest the removal of badges related to branches not supported here on GitLab.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Since this project right here is 4.3.4 only, I suggest the removal of badges related to branches not supported here on GitLab.