Add Search button in intl-tel-input

Question

I am using intltelInput to get the country code in contact numbers. I find it difficult to choose countries which are listed far below.So can anyone help me to add search option in the dropdowns. below is my code.

<div class="col-md-6">
            <div class="form-group">
                <label>Reference Contact No.</label>
                @Html.TextBoxFor(m => m.ReferenceContactNo, new { @Class = "form-control" })
            </div>
        </div>

J-Query Code:

$("#ReferenceContactNo").intlTelInput({
        separateDialCode:'false'
    });