update gemspec to match rubocop (0.24.0)
update gemspec to match rubocop (0.24.0)

brandleadership/qbrick,screenconcept/qbrick,screenconcept/kuhsaft,brandleadership/kuhsaft,brandleadership/kuhsaft,screenconcept/kuhsaft,brandleadership/qbrick,brandleadership/qbrick,screenconcept/qbrick,screenconcept/qbrick,brandleadership/kuhsaft,screenconcept/kuhsaft