let items = [{
  name: 'step 1',
  value: '0'
}, {
  name: 'step 2',
  value: '1'
}, {
  name: 'step 3',
  value: '2',
  selected: true
}];

ReactDOM.render(
  <Step
    items={items}
    onClick={listener}
    width={600} />,
  document
);