Added a sample IronMQ configuration.

app/config/queue.php

@@ -11,7 +11,7 @@
 	| API, giving you convenient access to each back-end using the same
 	| syntax for each one. Here you may set the default queue driver.
 	|
-	| Supported: "sync", "beanstalkd", "sqs"
+	| Supported: "sync", "beanstalkd", "sqs", "iron"
 	|
 	*/
 
@@ -48,6 +48,13 @@
 			'region' => 'us-east-1',
 		),
 
+		'iron' => array(
+			'driver'  => 'iron',
+			'project' => 'your-project-id',
+			'token'   => 'your-token',
+			'queue'   => 'your-queue-name',
+		),
+
 	),
 
 );