Updated README to 2.4.1

Author: anthonygauthier

README.md

@@ -33,7 +33,7 @@ someKeyName | someValueToShow
 <dependency>
   <groupId>io.github.delirius325</groupId>
   <artifactId>jmeter.backendlistener.elasticsearch</artifactId>
-  <version>2.4.0</version>
+  <version>2.4.1</version>
 </dependency>
 ```