Orchestra "HOWTO" application
This is an example application. This application has an index.php that outputs strings generated by PHP. It also has a public images folder to test the cache and various other tidbits to get you up and running.
From your Orchestra dashboard, click on Deploy New App. In your Repo URL field, place the url: git://github.com/orchestra-io/howto.git and set your index file to public/index.php then launch the application.