Console application has to exit with exitCode

fixes #562

yii

@@ -19,4 +19,5 @@ require(__DIR__ . '/vendor/autoload.php');
 $config = require(__DIR__ . '/config/console.php');
 
 $application = new yii\console\Application($config);
-return $application->run();
+$exitCode = $application->run();
+exit($exitCode);