add composer's vendor directory

vendor/bshaffer/oauth2-server-php/src/OAuth2/Autoloader.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace OAuth2;
+
+/**
+ * Autoloads OAuth2 classes
+ *
+ * @author    Brent Shaffer <bshafs at gmail dot com>
+ * @license   MIT License
+ */
+class Autoloader
+{
+    private $dir;
+
+    public function __construct($dir = null)
+    {
+        if (is_null($dir)) {
+            $dir = dirname(__FILE__).'/..';
+        }
+        $this->dir = $dir;
+    }
+    /**
+     * Registers OAuth2\Autoloader as an SPL autoloader.
+     */
+    public static function register($dir = null)
+    {
+        ini_set('unserialize_callback_func', 'spl_autoload_call');
+        spl_autoload_register(array(new self($dir), 'autoload'));
+    }
+
+    /**
+     * Handles autoloading of classes.
+     *
+     * @param string $class A class name.
+     *
+     * @return boolean Returns true if the class has been loaded
+     */
+    public function autoload($class)
+    {
+        if (0 !== strpos($class, 'OAuth2')) {
+            return;
+        }
+
+        if (file_exists($file = $this->dir.'/'.str_replace('\\', '/', $class).'.php')) {
+            require $file;
+        }
+    }
+}