twig breadcrumbs

breadcrump.twig

{% if breadcrumb is defined %}
<nav class="breadcrumb" role="navigation">
  <h2 class="element-invisible">{{ 'You are here'|t }}</h2>
  <ol>
  {% for item in breadcrumb %}
    {% if loop.last %}
      <li>{{ item }}</li>
    {% else %}
      <li>{{ item }} » </li>
    {% endif %}
  {% endfor %}
  </ol>
</nav>
{% endif %}