Add appscode to ADOPTERS list

Signed-off-by: Tamal Saha <[email protected]>

Author: tamalsaha

ADOPTERS.md

@@ -6,5 +6,6 @@ Below is a list of companies and projects that have adopted Open Cluster Managem
 
 - [Alibaba Cloud](https://www.alibabacloud.com/)
 - [Ant Group](https://www.antgroup.com/)
+- [AppsCode Inc.](https://appscode.com)
 - [Red Hat](https://www.redhat.com/)
 - [Xiao Hong Shu](https://www.xiaohongshu.com/)