Update readme.md

readme.md

@@ -37,5 +37,5 @@ $blade = new Blade($views, $cache);
 echo $blade->view()->make('hello');
 ```
 
-You can use all blade features as described in the Laravel 4 documentation:
+You can use all blade features as described in the Laravel 5 documentation:
 http://laravel.com/docs/templates#blade-templating