/**
  * Lists an index of existing billboard collections
  *
  * @apiMethod GET
  * @apiUri    /billboards/list
  * @apiParameter {
  * 		"name":          "limit",
  * 		"description":   "Number of result to return.",
  * 		"type":          "integer",
  * 		"required":      false,
  * 		"default":       25
  * }
  * @apiParameter {
  * 		"name":          "start",
  * 		"description":   "Number of where to start returning results.",
  * 		"type":          "integer",
  * 		"required":      false,
  * 		"default":       0
  * }
  * @return  void
  */
 public function listTask()
 {
     // Get the request vars
     $limit = Request::getVar('limit', 25);
     $limitstart = Request::getVar('limitstart', 0);
     // Load up the entries
     $collections = Collection::start($limitstart)->limit($limit)->rows();
     $this->send(array('collections' => $collections->toArray()));
 }