Update readme for release

Author: Stephen Powis

README.md

@@ -12,7 +12,7 @@ This client library is released on Maven Central.  Add a new dependency to your
 <dependency>
     <groupId>org.sourcelab</groupId>
     <artifactId>kafka-connect-client</artifactId>
-    <version>2.0.2</version>
+    <version>2.1.0</version>
 </dependency>
 ```