Portare CSS3 bootstrap da 3 colonne a 5 colonne

[cassano]

Prova così

<div class="row">
    <div class="col-md-2 col-md-offset-1 portfolio-item">
        <a href="#">
            <img class="img-responsive" src="images/images1.jpg" alt="Luxury Ready Goods in Season" width="200" height="180" style="border: 1px solid #000000; padding: 1">
        </a>
    </div>
    <div class="col-md-2 portfolio-item">
        <a href="#">
            <img class="img-responsive" src="images/images2.jpg" alt="Luxury Preorders" width="200" height="180" style="border: 1px solid #000000; padding: 1">
        </a>
    </div>
    <div class="col-md-2 portfolio-item">
        <a href="#">
            <img class="img-responsive" src="images/images1.jpg" alt="Luxury Ready Goods in Season" width="200" height="180" style="border: 1px solid #000000; padding: 1">
        </a>
    </div>
    <div class="col-md-2 portfolio-item">
        <a href="#">
            <img class="img-responsive" src="images/images2.jpg" alt="Luxury Preorders" width="200" height="180" style="border: 1px solid #000000; padding: 1">
        </a>
    </div>
    <div class="col-md-2 portfolio-item">
        <a href="#">
            <img class="img-responsive" src="images/images1.jpg" alt="Luxury Ready Goods in Season" width="200" height="180" style="border: 1px solid #000000; padding: 1">
        </a>
    </div>
</div>

Cosi però il conteggio non è 11 ?