Add new route to Foo page, which is the same as Home page.
Add test for Foo route.
Update controller to display "hello, world" string.
Add Application controller test and modify existing integration test.
Change view to render welcome message as upper-cased string.
Add index view test.
Add Procfile for Heroku.
Fix app location in Procfile
Remove JAVA_OPTS as it is not necessary in Play 2.2.