update(readme): update version

Author: fhussonnois

README.md

@@ -40,7 +40,7 @@ Just add **Kafka Clients for Kotlin** to the dependencies of your projects.
 <dependency>
   <groupId>io.streamthoughts</groupId>
   <artifactId>kafka-clients-kotlin</artifactId>
-  <version>0.1.0</version>
+  <version>0.2.0</version>
 </dependency>
 ```