<span class=“read-more”>

{% if include.currPost.external_url %}
<a href="{{ include.currPost.external_url | relative_url }}" target="_blank">
    {% else %}
    <a href="{{ include.currPost.url | relative_url }}">
        {% endif %} 
        {% if include.currPost.external_name %}
        Read more on {{ include.currPost.external_name }} &rarr;
        {% else %}
        More info &rarr;
        {% endif %}
    </a>

</span>