Complete basic process flow (start->task->end) #1
Description
Implement the most basic elements of a BPMN diagram:
- Start Event
- End Event
- Script Task
- Sequence Flow
BPMN Reference: https://camunda.org/bpmn/reference/
Elixir Reference for interprocess communication:
- http://erlang.org/doc/tutorial/overview.html#id60360
- http://theerlangelist.com/article/outside_elixir
Also add tests for the basic flow.