Update README.md

Author: simgislab

README.md

@@ -6,3 +6,9 @@ These services are maintained by community. They are not validated and may conta
 To become available for QuickMapServices plugin, new release should made by someone with appropriate privileges.
 
 A short instruction on how to add new QuickMapServices data_source: https://github.com/nextgis/quickmapservices/wiki/Adding-data-source
+
+Commercial support
+----------
+Need to fix a bug or add a feature to quickmapservices_contrib? We provide custom development and support for this software. [Contact us](http://nextgis.ru/en/contact/) to discuss options!
+
+[![http://nextgis.com](http://nextgis.ru/img/nextgis.png)](http://nextgis.com)