⬆️ Update bshaffer/oauth2-server-php library.

Manage oauth2-server-php library with composer.
Folder ./library/oauth2/ can be removed and includes removed with autoloading.

vendor/bshaffer/oauth2-server-php/test/bootstrap.php

@@ -0,0 +1,12 @@
+<?php
+
+require_once(dirname(__FILE__).'/../src/OAuth2/Autoloader.php');
+OAuth2\Autoloader::register();
+
+// register test classes
+OAuth2\Autoloader::register(dirname(__FILE__).'/lib');
+
+// register vendors if possible
+if (file_exists(__DIR__.'/../vendor/autoload.php')) {
+    require_once(__DIR__.'/../vendor/autoload.php');
+}