Update version to 0.2.0 in Installation section

Author: Leeon-Tang

README.md

@@ -26,14 +26,14 @@
 <dependency>
   <groupId>ai.wavespeed</groupId>
   <artifactId>wavespeed-java-sdk</artifactId>
-  <version>0.1.0</version>
+  <version>0.2.0</version>
 </dependency>
 ```
 
 ### Gradle
 
 ```gradle
-implementation 'ai.wavespeed:wavespeed-java-sdk:0.1.0'
+implementation 'ai.wavespeed:wavespeed-java-sdk:0.2.0'
 ```
 
 ## API Client