Collect registrant parameters

This allows for additional default and custom fields per GoToWebinar’s
API documentation when registering an attendee, such as phone, city and
state. The use of the collect helper eliminates the need for the
Attendee Entity class.

Author: upwebdesign

src/Webinar.php

@@ -111,7 +111,7 @@ public function registerAttendee($webinarKey, $params)
     {
         $url = 'organizers/' . $this->getOrganizerKey() . '/webinars/' . $webinarKey . '/registrants';
 
-        $attendeeObject = new Attendee($params);
+        $attendeeObject = collect($params);
 
         $this->setHttpMethod('POST')->setUrl($url)->setParams($attendeeObject->toArray())->sendRequest();