add my companies to README

Created by: sarumont

Adding my company (Devsupply) and our sibling company (Neverfail) to the list of OAPI users

README.md

@@ -599,6 +599,7 @@ Here are some companies/projects (alphabetical order) using OpenAPI Generator in
 - [Cupix](https://www.cupix.com/)
 - [Datadog](https://www.datadoghq.com)
 - [DB Systel](https://www.dbsystel.de)
+- [Devsupply](https://www.devsupply.com/)
 - [DocSpring](https://docspring.com/)
 - [dwango](https://dwango.co.jp/)
 - [Edge Impulse](https://www.edgeimpulse.com/)
@@ -633,6 +634,7 @@ Here are some companies/projects (alphabetical order) using OpenAPI Generator in
 - [MoonVision](https://www.moonvision.io/)
 - [Myworkout](https://myworkout.com)
 - [NamSor](https://www.namsor.com/)
+- [Neverfail](https://www.neverfail.com/)
 - [Nokia](https://www.nokia.com/)
 - [Options Clearing Corporation (OCC)](https://www.theocc.com/)
 - [Openet](https://www.openet.com/)