Fix typo and Update README

Author: sy-records

README.md

@@ -88,6 +88,7 @@ Options:
       --config-path[=CONFIG-PATH]          Setting the Swoole config file path
       --properties-path[=PROPERTIES-PATH]  Setting the Properties config file path
   -U, --unsubscribe[=UNSUBSCRIBE]          Topics that need to be unsubscribed (multiple values allowed)
+  -e, --event[=EVENT]                      Subscribed EventDispatcher [default: ""]
   -h, --help                               Display help for the given command. When no command is given display help for the list command
   -q, --quiet                              Do not output any message
   -V, --version                            Display this application version

src/Handler/SubscribeHandler.php

@@ -105,7 +105,6 @@ public function handle(InputInterface $input, OutputInterface $output): int
                     $this->log(json_encode($buffer));
                     $event = $this->getEvent();
                     if (!empty($event) && class_exists($event)) {
-                        echo 'sas';
                         (new EventDispatcher())->dispatch(new $event($client, $input, $output));
                     }
                 }