add a event script command for package update

Author: inhere

composer.json

@@ -40,6 +40,7 @@
         "phpunit/phpunit": "^5.7"
     },
     "scripts": {
-        "test": "./vendor/bin/phpunit"
+        "test": "./vendor/bin/phpunit",
+        "post-package-update": "echo 'Please rerun command: php bin/swoft dev:publish swoft/devtool -f'"
     }
 }