Apply fixes from StyleCI

public/index.php

@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of Cachet.
+ *
+ * (c) Alt Three Services Limited
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 use Illuminate\Contracts\Http\Kernel;
 use Illuminate\Http\Request;