let layout = DatePickerRange.datePickerRange
                    "my-date-picker-range"
                    [
                        DatePickerRange.Attr.endDate "2017-6-21" 
                        DatePickerRange.Attr.displayFormat "MMMM Y, DD"
                        DatePickerRange.Attr.startDatePlaceholderText "MMMM Y, DD"
                    ]