docs: add note about cncf to readme (#2834)

Signed-off-by: Attila Mészáros <[email protected]>

Author: csviri

README.md

@@ -15,6 +15,10 @@ conversion hooks and dynamic admission controllers are supported as a separate p
 Under the hood it uses the excellent [Fabric8 Kubernetes Client](https://github.com/fabric8io/kubernetes-client),
 which provides additional facilities, like generating CRD from source code (and vice versa). 
 
+<img src="docs/static/images/cncf_logo2.png" alt="Icon" style="height: 70px; margin-right: 12px;">
+
+Java Operator SDK is a CNCF project as part of [Operator Framework](https://github.com/operator-framework).
+
 ## Documentation
 
 Documentation can be found on the  **[JOSDK WebSite](https://javaoperatorsdk.io/)**.