Small changes
Merge branch 'lnaie-master'
Changed to workflowengine
Added start and end states. Added a workflow engine, so you can pick between a WorkflowEntity and a WorkflowEngine. Use State and Trigger classes instead of strings.
Merge pull request #6 from mivano/states

Workflow states extension
Merge branch 'master' of https://github.com/mivano/stateflow

* 'master' of https://github.com/mivano/stateflow:
  Added start and end states. Added a workflow engine, so you can pick between a WorkflowEntity and a WorkflowEngine. Use State and Trigger classes instead of strings.
  Changed to workflowengine
Synced with main repository.