Just created a simple application that can schedule jobs. The jobs are created in JavaScript and included in your own application. The app-cronjob will monitor all apps and trigger jobs defined in your application. We are more advanced scheduling as a part of Enonic XP in the future, but for now this application will work for simple needs.
See https://github.com/enonic/app-cronjob for how to install and how to use it. Feel free to suggest improvements.
Thanks.