Fix gemfile

docs/Gemfile

@@ -17,4 +17,18 @@ gem "github-pages", group: :jekyll_plugins
 # If you have any plugins, put them here!
 group :jekyll_plugins do
   gem "jekyll-feed", "~> 0.12"
-end
+end
+
+# Windows and JRuby does not include zoneinfo files, so bundle the tzinfo-data gem
+# and associated library.
+platforms :mingw, :x64_mingw, :mswin, :jruby do
+  gem "tzinfo", ">= 1", "< 3"
+  gem "tzinfo-data"
+end
+
+# Performance-booster for watching directories on Windows
+gem "wdm", "~> 0.1.1", :platforms => [:mingw, :x64_mingw, :mswin]
+
+# Lock `http_parser.rb` gem to `v0.6.x` on JRuby builds since newer versions of the gem
+# do not have a Java counterpart.
+gem "http_parser.rb", "~> 0.6.0", :platforms => [:jruby]

docs/_site/assets/js/docs.js

@@ -0,0 +1,49 @@
+$(function() {
+    $('html').toggleClass('no-js js');
+
+    // Update sidebar highlighting based on Scrollspy
+    $(window).on('activate.bs.scrollspy', function () {
+        const spyTarget = $('[data-spy="scroll"]').data('target');
+        const $activeSpy = $(spyTarget).find('.nav-link.active');
+        const $tree = $activeSpy.parentsUntil('.bs-docs-sidenav', 'li');
+
+        $tree.find('> a').addClass('active');
+    });
+
+    // Toggleable mobile table of contents button
+    $('.toggle-toc').on('click', function () {
+        const $this = $(this);
+        const $toc = $("#mobileTOC");
+
+        $toc.toggle();
+        $this.attr('aria-expanded', $toc.is(':visible'));
+
+        const $btn = $this.find('[data-role="toggle"]');
+
+        if ($btn.text() === 'Hide') {
+            $btn.text('Show');
+        } else {
+            $btn.text('Hide');
+        }
+    });
+
+    // Make the triangular pattern in the header
+    if (uiColors) {
+        const $masthead = $('.site-masthead');
+
+        if ($masthead.length) {
+            const t = new Trianglify({
+                cellsize: 90,
+                noiseIntensity: 0,
+                x_gradient: [
+                    uiColors[0],
+                    uiColors[1],
+                ],
+            });
+            const pattern = t.generate(window.screen.width | $masthead.outerWidth(), $masthead.outerHeight() * 1.2);
+
+            const style = $('<style>.site-masthead { background-image: ' + pattern.dataUrl + '; }</style>');
+            $('html > head').append(style);
+        }
+    }
+});