Missing Controller

Error: DonkeyWithGrassController could not be found.

Error: Create the class DonkeyWithGrassController below in file: app/controllers/donkey_with_grass_controller.php

<?php
class DonkeyWithGrassController extends AppController {

	var $name = 'DonkeyWithGrass';
}
?>

Notice: If you want to customize this error message, create app/views/errors/missing_controller.ctp