added more to comment.

laravel/routing/route.php

@@ -51,7 +51,7 @@ public function __construct($key, $callback, $parameters = array())
 		// Extract each URI from the route key. Since the route key has the
 		// request method, we will extract that from the string. If the URI
 		// points to the root of the application, a single forward slash
-		// will be returned.
+		// will be returned since that is used for the root route.
 		if (strpos($key, ', ') === false)
 		{
 			$this->uris = array($this->extract($this->key));