message: Shows default date instead of "Select Date" if placeHolderText prop isn't specified.
  Enhancement based on issue
diff: @@ -23,6 +23,9 @@ export class DatePicker extends React.Component {
  this.setState({
  defaultDate: this.props.defaultDate ? this.props.defaultDate : new Date()
  });
  + if (!this.props.placeHolderText && this.props.defaultDate) {
  + this.setState({ chosenDate: this.props.defaultDate })
  + }
  };
  setDate(date) {
  