Add link to Gradle Swagger Generator Plugin (#6481)

README.md

@@ -62,6 +62,8 @@ Check out [OpenAPI-Spec](https:/OAI/OpenAPI-Specification) for addit
  - [To build a server stub](#to-build-a-server-stub)
  - [To build the codegen library](#to-build-the-codegen-library)
  - [Workflow Integration](#workflow-integration)
+ - [Maven Integration](#maven-integration)
+ - [Gradle Integration](#gradle-integration)
  - [Github Integration](#github-integration)
  - [Online Generators](#online-generators)
  - [Guidelines for Contribution](https:/swagger-api/swagger-codegen/wiki/Guidelines-for-Contribution)
@@ -618,10 +620,16 @@ mvn package
 
 Note! The templates are included in the library generated. If you want to modify the templates, you'll need to either repackage the library OR specify a path to your scripts
 
-## Workflow integration
+## Workflow Integration
+
+### Maven Integration
 
 You can use the [swagger-codegen-maven-plugin](modules/swagger-codegen-maven-plugin/README.md) for integrating with your workflow, and generating any codegen target.
 
+### Gradle Integration
+
+[Gradle Swagger Generator Plugin](https:/int128/gradle-swagger-generator-plugin) is available for generating source code and API document.
+
 ## GitHub Integration
 
 To push the auto-generated SDK to GitHub, we provide `git_push.sh` to streamline the process. For example: