v1.0.6 (#54)

### Changes

- Fixes FATAL ERROR:  ad_id is not defined

Author: donavanbecker

lib/switchbot.js

@@ -221,7 +221,7 @@ class Switchbot {
     }
     if (id) {
       id = id.toLowerCase().replace(/\:/g, '');
-      ad_id = ad.address.toLowerCase().replace(/[^a-z0-9]/g, '');
+      let ad_id = ad.address.toLowerCase().replace(/[^a-z0-9]/g, '');
       if (ad_id !== id) {
         return false;
       }