An optional boolean value specifying whether to read the data source on widget initialization.
The default is true.

<div id="tags" />

<script type="text/javascript">
    jQuery(function ($) {
        var ds = new shield.DataSource({
            data: tagList

            width: 600,
            height: 400,
            dataSource: ds,
            readDataSource: false

        // no tags will be rendered at this point

        // read the dataSource manually to render the tags;