<li><a href="?organization=1">Organization</a></li>
 if (isset($_REQUEST['organisation'])) {
       $response = $XeroOAuth->request('GET', $XeroOAuth->url('Organisation', 'core'), array('page' => 0));
       if ($XeroOAuth->response['code'] == 200) {
           $organisation = $XeroOAuth->parseResponse($XeroOAuth->response['response'], $XeroOAuth->response['format']);
       print_r($organisation);
           echo "Organisation name: " . $organisation->Organisations[0]->Organisation->Name;
       } else {
           outputError($XeroOAuth);
       }
   }

Organisation name: Cadeo