✨ Add support for article summaries

exampleSite/content/samples/_index.md

@@ -4,6 +4,7 @@ description: "See what's possible with Congo."
 
 cascade:
   showEdit: false
+  showSummary: true
 ---
 
 {{< lead >}}
@@ -14,6 +15,6 @@ This section contains some demo pages that show how Congo renders different type
 
 You can also see an example [taxonomy listing]({{< ref "tags" >}}) page.
 
-_**Sidenote:** This page is just a standard Congo article listing and Hugo has been configured to generate a `samples` content type._
+_**Sidenote:** This page is just a standard Congo article listing and Hugo has been configured to generate a `samples` content type and display article summaries._
 
 ---

exampleSite/content/samples/emoji-support.md

@@ -2,13 +2,12 @@
 title: "Emoji Support"
 date: 2019-03-05
 description: "Guide to emoji usage in Hugo"
+summary: "📖🏞️🧗🏽🪂🐉🧙🏽‍♂️🧚🏽👸"
 tags: ["emoji", "sample"]
 ---
 
 Emoji can be enabled in a Hugo project in a number of ways.
 
-<!--more-->
-
 The [`emojify`](https://gohugo.io/functions/emojify/) function can be called directly in templates or [Inline Shortcodes](https://gohugo.io/templates/shortcode-templates/#inline-shortcodes).
 
 To enable emoji globally, set `enableEmoji` to `true` in your site's [configuration](https://gohugo.io/getting-started/configuration/) and then you can type emoji shorthand codes directly in content files; e.g.

exampleSite/content/samples/rich-content.md

@@ -2,13 +2,12 @@
 title: "Rich Content"
 date: 2019-03-10
 description: "A brief description of Hugo Shortcodes"
+summary: "This is an _example_ of a **rich** content summary."
 tags: ["shortcodes", "privacy", "sample"]
 ---
 
 Hugo ships with several [Built-in Shortcodes](https://gohugo.io/content-management/shortcodes/#use-hugos-built-in-shortcodes) for rich content, along with a [Privacy Config](https://gohugo.io/about/hugo-and-gdpr/) and a set of Simple Shortcodes that enable static and no-JS versions of various social media embeds.
 
-## <!--more-->
-
 ## YouTube Privacy Enhanced Shortcode
 
 {{< youtube ZJthWmvUzzc >}}