update document

xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/Application.java → xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/FramelessApplication.java

 /**
  * @author xuxueli 2018-10-31 19:05:43
  */
-public class Application {
-    private static Logger logger = LoggerFactory.getLogger(Application.class);
+public class FramelessApplication {
+    private static Logger logger = LoggerFactory.getLogger(FramelessApplication.class);
 
     public static void main(String[] args) {
 
             // start
             FrameLessXxlJobConfig.getInstance().initXxlJobExecutor();
 
+            // Blocks until interrupted
             while (true) {
-                TimeUnit.HOURS.sleep(1);
+                try {
+                    TimeUnit.HOURS.sleep(1);
+                } catch (InterruptedException e) {
+                    break;
+                }
             }
         } catch (Exception e) {
             logger.error(e.getMessage(), e);