basic-theme/layouts/_default/summary.html

<article class="post">
    <header>
        <h2><a href='{{ .Permalink }}'>{{ .Title }}</a> </h2>
        <div class="post-meta">{{ .Date.Format "Mon, Jan 2, 2006" }} - {{ .FuzzyWordCount }} Words </div>
    </header>
    {{ .Summary }}
    {{ if .Truncated }}
    <footer>
        <a href='{{ .Permalink }}'>
            <span style="white-space: nowrap;">Read more →</span>
        </a>
    </footer>
    {{ end }}
</article>