Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/autoload.php

@@ -0,0 +1,7 @@
+<?php
+
+// autoload.php @generated by Composer
+
+require_once __DIR__ . '/composer' . '/autoload_real.php';
+
+return ComposerAutoloaderInitDrupal8::getLoader();