This is a FuelPHP module, so make sure you have modules enabled and clone it in a module folder under the name "Facebook".

For easier use I suggest you create a class "Facebook" under your main classes dir with:

	class Facebook extends \Facebook\Fb {}

Example usage (requires above mentioned class):

	Facebook::require_auth();
	
	$me = Facebook::api('/me');
	var_dump($me);

	$logout_uri = Facebook::getLogoutUri();
	$logout_uri = Facebook::get_logout_uri();

You can use both camel case and lowercase as I personally loathe camel case.