index_includes/commitments.html
<div class="usa-grid">
{% for c in site.data.commitments %}
{% assign id = c[0] %}
{% include_relative index_includes/commitment.html id=id %}
{% unless forloop.last %}
<!-- ugly hack: the number of entries in this cycle must match
the number of columns in this grid row -->
{% cycle '', '', '', '', '', '</div><div class="usa-grid">' %}
{% endunless %}
{% endfor %}
</div>