add other freshbook api methods to getMethodArgs()

* project.list
* task.create, task.update, task.get, task.delete, task.list
* time_entry.create, time_entry.update, time_entry.get, time_entry.delete, time_entry.list

  if ($fb = freshbooks_connect()) {
    drupal_set_message(t('Your API credentials have been verified by the FreshBooks server!'));
  }
  else {
    return t('Your API credentials failed authentication.');
  }
  $data = array(
    'page' => 1,
    'per_page' => 15,
  );
  $request = $fb->buildAPIRequest('project.list', $data);
  $response = $fb->sendAPIRequest($request->asXML());