chore: Update README file

Author: mkellnhofer

README.md

@@ -20,15 +20,15 @@ Add this dependency to your pom.xml:
 <dependency>
     <groupId>com.dracoon</groupId>
     <artifactId>dracoon-sdk</artifactId>
-    <version>4.0.1</version>
+    <version>4.0.2</version>
 </dependency>
 ```
 
 ##### Gradle
 
 Add this dependency to your build.gradle:
 ```groovy
-compile 'com.dracoon:dracoon-sdk:4.0.1'
+compile 'com.dracoon:dracoon-sdk:4.0.2'
 ```
 
 ##### JAR import