Improve logging

lib/zigbee.js

@@ -125,8 +125,9 @@ class Zigbee extends events.EventEmitter {
     }
 
     async stop() {
+        logger.info('Stopping zigbee-herdsman...');
         await this.herdsman.stop();
-        logger.info('zigbee-herdsman stopped');
+        logger.info('Stopped zigbee-herdsman');
     }
 
     async permitJoin(permit, resolvedEntity, time=undefined) {