Utilize Bundler to manage dependencies

Gemfile

@@ -0,0 +1,4 @@
+source 'https://rubygems.org'
+gem 'github-pages', group: :jekyll_plugins
+
+gem "minima", '2.0.0'

_config.yml

@@ -23,9 +23,12 @@ github_username:  json-schema-org
 
 # Build settings
 markdown: kramdown
-#theme: minima
+theme: minima
 
 collections:
   docs:
     output: true
     permalink: "/:title:output_ext"
+
+gems:
+  - jekyll-relative-links

_includes/header.html

@@ -2,26 +2,24 @@
 
   <div class="wrapper">
 
-    {% assign custom_url = site.url | append: site.baseurl %}
-    {% assign full_base_url = site.github.url | default: custom_url %}
-    <a class="site-title" href="{{ full_base_url }}/">{{ site.title | escape }}</a>
+    <a class="site-title" href="{{ "/" | relative_url}}">{{ site.title | escape }}</a>
 
     <nav class="site-nav">
-      <a href="#" class="menu-icon">
+      <span class="menu-icon">
         <svg viewBox="0 0 18 15" width="18px" height="15px">
           <path fill="#424242" d="M18,1.484c0,0.82-0.665,1.484-1.484,1.484H1.484C0.665,2.969,0,2.304,0,1.484l0,0C0,0.665,0.665,0,1.484,0 h15.031C17.335,0,18,0.665,18,1.484L18,1.484z"/>
           <path fill="#424242" d="M18,7.516C18,8.335,17.335,9,16.516,9H1.484C0.665,9,0,8.335,0,7.516l0,0c0-0.82,0.665-1.484,1.484-1.484 h15.031C17.335,6.031,18,6.696,18,7.516L18,7.516z"/>
           <path fill="#424242" d="M18,13.516C18,14.335,17.335,15,16.516,15H1.484C0.665,15,0,14.335,0,13.516l0,0 c0-0.82,0.665-1.484,1.484-1.484h15.031C17.335,12.031,18,12.696,18,13.516L18,13.516z"/>
         </svg>
-      </a>
+      </span>
 
       <div class="trigger">
-        <a class="page-link" href="{{ full_base_url }}/documentation.html">Docs</a>
-        <a class="page-link" href="{{ full_base_url }}/examples.html">Examples</a>
-        <a class="page-link" href="{{ full_base_url }}/implementations.html">Software</a>
+        <a class="page-link" href="{{ "/documentation.html" | relative_url }}">Docs</a>
+        <a class="page-link" href="{{ "/examples.html" | relative_url }}">Examples</a>
+        <a class="page-link" href="{{ "/implementations.html" | relative_url }}">Software</a>
         {% for my_page in site.pages %}
           {% if my_page.menutitle %}
-          <a class="page-link" href="{{ my_page.url | prepend: full_base_url }}">{{ my_page.menutitle | escape }}</a>
+          <a class="page-link" href="{{ my_page.url | relative_url }}">{{ my_page.menutitle | escape }}</a>
           {% endif %}
         {% endfor %}
       </div>

_sass/minima.scss

@@ -1,3 +1,6 @@
+// This file is the same as the one provided by the the minima theme (ie. unmodified),
+// but must be reproduced here because of our custom syntax-highlighting partial
+
 // Define defaults for each variable.
 
 $base-font-family: "Helvetica Neue", Helvetica, Arial, sans-serif !default;
@@ -6,7 +9,7 @@ $base-font-weight: 400 !default;
 $small-font-size:  $base-font-size * 0.875 !default;
 $base-line-height: 1.5 !default;
 
-$spacing-unit:     10px !default;
+$spacing-unit:     30px !default;
 
 $text-color:       #111 !default;
 $background-color: #fdfdfd !default;
@@ -17,28 +20,27 @@ $grey-color-light: lighten($grey-color, 40%) !default;
 $grey-color-dark:  darken($grey-color, 25%) !default;
 
 // Width of the content area
-$content-width:    960px !default;
+$content-width:    800px !default;
 
 $on-palm:          600px !default;
 $on-laptop:        800px !default;
 
 // Use media queries like this:
 // @include media-query($on-palm) {
-//     .wrapper {
-//         padding-right: $spacing-unit / 2;
-//         padding-left: $spacing-unit / 2;
-//     }
+//   .wrapper {
+//     padding-right: $spacing-unit / 2;
+//     padding-left: $spacing-unit / 2;
+//   }
 // }
 @mixin media-query($device) {
-    @media screen and (max-width: $device) {
-        @content;
-    }
+  @media screen and (max-width: $device) {
+    @content;
+  }
 }
 
 // Import partials.
 @import
   "minima/base",
   "minima/layout",
-  "minima/prism",
-  "minima/intra-navigation"
-;
+  "minima/syntax-highlighting"
+;