add more companies

Author: wing328

README.md

@@ -746,6 +746,7 @@ Here are some companies/projects using Swagger Codegen in production. To add you
 - [Avenida Compras S.A.](https://www.avenida.com.ar)
 - [beemo](http://www.beemo.eu)
 - [bitly](https://bitly.com)
+- [Bufferfly Network](https://www.butterflynetinc.com/)
 - [Cachet Financial](http://www.cachetfinancial.com/)
 - [CloudBoost](https://www.CloudBoost.io/)
 - [Conplement](http://www.conplement.de/)
@@ -758,6 +759,7 @@ Here are some companies/projects using Swagger Codegen in production. To add you
 - [Expected Behavior](http://www.expectedbehavior.com/)
 - [Finder](http://en.finder.pl/)
 - [FH Münster - University of Applied Sciences](http://www.fh-muenster.de)
+- [Gear Zero Network](https://www.gearzero.ca)
 - [GraphHopper](https://graphhopper.com/)
 - [Gravitate Solutions](http://gravitatesolutions.com/)
 - [IMS Health](http://www.imshealth.com/en/solution-areas/technology-and-applications)