new file:   classes/OAuth2/OAuth2.php
	new file:   classes/OAuth2/Provider.php
	new file:   classes/OAuth2/Provider/Facebook.php
	new file:   classes/OAuth2/Provider/Github.php
	new file:   classes/OAuth2/Provider/Google.php
	new file:   classes/OAuth2/Token.php
	new file:   classes/OAuth2/Token/Access.php
	new file:   classes/OAuth2/Token/Authorize.php
	new file:   config/oauth2.php