<script type="text/javascript">
    var feed = new Instafeed({
        get: 'tagged',
        tagName: 'awesome',
        clientId: 'my client ID'
    });
    feed.run();
</script>

<block type="cms/block" name="instagram" after="previous block's name">
<action method="setBlockId"><block_id>instafeed</block_id></action>
</block>