How do I add a step that automatically completes?

Sometimes there are use cases where you want a step that automatically completes to save users needing to do this. Indeed sometimes you might want a process to automatically start/complete as soon as a form is submitted.  

To cater for this there is now a new step type as shown below: 

As the step automatically completes the only configuration needed is to set the name/description of it: 

 As there is only one step the instant the step is started it is automatically completed as shown: