gistfile1.txt

<div class="modal" data-backdrop="false">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-body">
                <div ng-transclude></div>
            </div>
        </div>
    </div>
</div>

<!----------this is on the state template side -->
<ni-popup><div class="mycontent"><p>this is the popup content</p></div></ni-popup>

<!----------this is the result rendered directive --->
<div class="modal" data-backdrop="false">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-body">
              <div class="mycontent"><p>this is the popup content</p></div>
            </div>
        </div>
    </div>
</div>