Update README.md

README.md

@@ -4,6 +4,7 @@ Open62541
 An open-source communication stack implementation of OPC UA (OPC Unified Architecture) licensed under LGPL + static linking exception.
 
 [![Build Status](https://travis-ci.org/acplt/open62541.png?branch=master)](https://travis-ci.org/acplt/open62541)
+[![Coverity Scan Build Status](https://scan.coverity.com/projects/1864/badge.svg)](https://scan.coverity.com/projects/1864)
 
 ## Getting dependencies
 ### Ubuntu