Commit
13930d5cc202c1ba7851aeea003d70caeee103e0
by pmaier@sysmocom.deREADME.md document recently added lock/unlock feature
The ara-m applet now has a method to lock the store data command.
This prevents unauthorized changes to the access rules.
Related: SYS#7245
Change-Id: I5a8db9c823a207842aa894485820d610d311c2e0