updated docs

Author: yassine

README.md

@@ -26,7 +26,7 @@ You can have the library from Maven Central.
 <dependency>
     <groupId>co.ipdata.client</groupId>
     <artifactId>ipdata-java-client</artifactId>
-    <version>0.1.1</version>
+    <version>0.2.0</version>
 </dependency>
 ```