As long as the project is in alpha stage, you must make sure you setup the whole development environment, including a number of [project dependencies](https://github.com/bpmn-io) according to [our development setup](https://github.com/bpmn-io/bpmn-js/blob/master/docs/project/SETUP.md).
## License
Use under the terms of the [bpmn-js license](http://bpmn.io/license).