update readme

Author: crossoverJie

cim-client-sdk/README.md

@@ -1,25 +1,25 @@
 
 ```java
-var auth1 = ClientConfigurationData.Auth.builder()
-.userId(id)
-.userName(cj)
-.build();
-
-Client client1 = Client.builder()
-                .auth(auth1)
-                .routeUrl(routeUrl)
-                .build();
-
-ClientState.State state = client1.getState();
-Awaitility.await().atMost(10, TimeUnit.SECONDS)
-.untilAsserted(() -> Assertions.assertEquals(ClientState.State.Ready, state));
-Optional<CIMServerResVO> serverInfo = client1.getServerInfo();
-Assertions.assertTrue(serverInfo.isPresent());
-
-// send msg
-String msg = "hello";
-client1.sendGroup(msg);
-
-// get oline user
-Set<CIMUserInfo> onlineUser = client1.getOnlineUser();
+    var auth1 = ClientConfigurationData.Auth.builder()
+    .userId(id)
+    .userName(cj)
+    .build();
+    
+    Client client1 = Client.builder()
+                    .auth(auth1)
+                    .routeUrl(routeUrl)
+                    .build();
+    
+    ClientState.State state = client1.getState();
+    Awaitility.await().atMost(10, TimeUnit.SECONDS)
+    .untilAsserted(() -> Assertions.assertEquals(ClientState.State.Ready, state));
+    Optional<CIMServerResVO> serverInfo = client1.getServerInfo();
+    Assertions.assertTrue(serverInfo.isPresent());
+    
+    // send msg
+    String msg = "hello";
+    client1.sendGroup(msg);
+    
+    // get oline user
+    Set<CIMUserInfo> onlineUser = client1.getOnlineUser();
 ```