Add Sinatra
Create basic Sinatra server
Add Foreman

Easy command startup with environment loading. `Procfile` is required anyway if
you want to run something on Heroku.
Configure Sinatra for Heroku
Add Heroku API
Use HAML
Add basic index template
Show running process list

This fetches the current process list from Heroku and displays it on the index.
Processes are separated into their types (web, run, etc.).
Start processes from the web UI

Submitting this form with some number of seconds to count to will spawn a dyno
to do it.
Flush STDOUT while counting

Otherwise it gets buffered and we can't follow in realtime.