Update README.md

Author: magefan

README.md

@@ -150,3 +150,6 @@ http://software77.net/geo-ip/
 
   ### Shopware Extensions
   * [Shopware WebP Extension](https://magefan.com/shopware/extensions/webp)
+     
+  ### Shopify Apps
+  * [Shopify Login As Customer](https://apps.shopify.com/login-as-customer)