change gitignore

vendor/laravel/serializable-closure/src/Contracts/Serializable.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace Laravel\SerializableClosure\Contracts;
+
+interface Serializable
+{
+    /**
+     * Resolve the closure with the given arguments.
+     *
+     * @return mixed
+     */
+    public function __invoke();
+
+    /**
+     * Gets the closure that got serialized/unserialized.
+     *
+     * @return \Closure
+     */
+    public function getClosure();
+}