replaced yml config extension with wildcard

README.md

@@ -18,7 +18,7 @@ This module serves as a central cron runner. It allows you to register a cron jo
 }
 ```
 
-Then add `Heartsentwined\Cron` to the `modules` key in `(app root)/config/application.config.yml`
+Then add `Heartsentwined\Cron` to the `modules` key in `(app root)/config/application.config.*`
 
 Cron module will also hook onto your application's database, through [`DoctrineORMModule`](https://github.com/doctrine/DoctrineORMModule). It will create a single table, `he_cron_job`, and will use the default EntityManager `doctrine.entitymanager.orm_default`. If your settings are different, please modify the `doctrine` section of `config/module.config.yml` and instances of `doctrine.entitymanager.orm_default` in `Heartsentwined\Cron\Controller\CronController` as needed.