update dependencies

classes/GoogleCalendarClient.php

@@ -1,7 +1,7 @@
 <?php namespace NicoSt\GCalendar\Classes;
 
-use Google_Client;
-use Google_Service_Calendar;
+use Google\Client as Google_Client;
+use Google\Service\Calendar as Google_Service_Calendar;
 use Log;
 
 use NicoSt\GCalendar\Models\Settings;