message: Add label to date picker in basic usage
diff: @@ -25,6 +25,8 @@ export default class BasicUsage extends Component {
  <DatePicker
  keyboard
  clearable
  + label="Choose a date"
  + helperText="Possible manual entry via keyboard"
  maxDateMessage="Date must be less than today"
  value={selectedDate}
  onChange={this.handleDateChange}
  