huge upgrade to theme and pagefind search bar.

themes/hugo-book.backup/exampleSite/content.en/docs/shortcodes/buttons.md

@@ -0,0 +1,13 @@
+# Buttons
+
+Buttons are styled links that can lead to local page or external link.
+
+## Example
+
+```tpl
+{{</* button relref="/" [class="..."] */>}}Get Home{{</* /button */>}}
+{{</* button href="https://github.com/alex-shpak/hugo-book" */>}}Contribute{{</* /button */>}}
+```
+
+{{<button href="/">}}Get Home{{</button>}}
+{{<button href="https://github.com/alex-shpak/hugo-book">}}Contribute{{</button>}}