Update README.md

Author: magefan

README.md

@@ -150,6 +150,7 @@ http://software77.net/geo-ip/
 
   ### Shopware Extensions
   * [Shopware WebP Extension](https://magefan.com/shopware/extensions/webp)
+  * [Shopware Blog Extension](https://magefan.com/shopware/extensions/blog)
 
   ### Shopify Apps
   * [Shopify Login As Customer](https://apps.shopify.com/login-as-customer)