Update README.md (#392)

* Update README.md for static analysis

Author: RogerZhongAWS

README.md

@@ -152,6 +152,13 @@ cmake --build . --target test-aws-iot-device-client
 
 ## Additional Resources
 
+### Static Analysis
+* [Sonarcloud](https://sonarcloud.io) code analysis results are viewable at: https://sonarcloud.io/project/overview?id=awslabs_aws-iot-device-client
+* [Cppcheck](https://cppcheck.sourceforge.io/) is a lightweight, open-source tool that has been configured to run on against every commit. To run the analysis manually: `./static-checks/run-cppcheck.sh`
+* [Coverity](https://scan.coverity.com) checks our main branch against rules from the [MISRA coding standard](https://www.misra.org.uk).
+
+
+### AWS Documentation
 This section provides links to additional AWS IoT resources that may help you use and modify the AWS IoT Device Client:
 
 - [API Documentation generated by Doxygen](https://awslabs.github.io/aws-iot-device-client/annotated.html)