Remove ruby dependency from website build

docs/templates/default.html.j2

@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html lang="en">
+{% include "shared/_head.html.j2" %}
+
+  <body id="{{slug}}">
+{% include "shared/_navbar.html.j2" %}
+
+    <div class="container">
+      <div class="row">
+        <h1>{{headline}}</h1>
+        {% for item in body %}
+          {% if item.text %}
+            {{ item.text | replace('$JQ_VERSION', jq_version) | markdownify }}
+          {% endif %}
+
+          {% if item.command %}
+            {% set resultID = unique_id() %}
+            <div class="tutorial-example">
+              <div class="accordion-heading">
+                <pre>{{item.command}}</pre>
+                <a data-toggle="collapse" href="#result{{resultID}}">Show result</a>
+              </div>
+              <div id="result{{resultID}}" class="accordion-body collapse">
+                <pre>{{item.result}}</pre>
+              </div>
+            </div>
+          {% endif %}
+        {% endfor %}
+      </div>
+    </div>
+
+{% include "shared/_footer.html.j2" %}
+  </body>
+</html>