diff --git a/README.md b/README.md
index fd550ae..a353ee4 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,15 @@
-# camunda-rest-client
\ No newline at end of file
+# camunda-rest-client
+
+```php
+# an example to use camunda rest api to complete task
+
+use Camunda\Entity\Request\TaskRequest;
+use Camunda\Service\TaskService;
+
+$host = 'http://localhost:8080/engine-rest';
+$taskRequest = new TaskRequest();
+$taskService = new TaskService($host);
+
+$taskId = '8cd376cc-bf7f-11e7-a6e2-005056c00008';
+echo $taskService->complete($taskId, $taskRequest);
+```