Update index

public/index.html

@@ -422,6 +422,34 @@ Copyright © 2017 <a href="https://aims.ac.za">African Institute for Mathematica
 
     
 
+    <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.8.0/highlight.min.js"></script>
+    <script>hljs.initHighlightingOnLoad();</script>
+  </body>
+</html>
+
+scrollspy.appendChild(li);
+          }
+        } else {
+          scrollspy.parentElement.removeChild(scrollspy)
+        }
+
+
+        /* Add permanent link next to the headers */
+        var headers = document.querySelectorAll("h1, h2, h3, h4, h5, h6");
+
+        for(var i = 0; i < headers.length; i++) {
+            var a = document.createElement("a");
+            a.setAttribute("class", "headerlink");
+            a.setAttribute("href", "#" + headers[i].id);
+            a.setAttribute("title", "Permanent link")
+            a.innerHTML = "#";
+            headers[i].appendChild(a);
+        }
+      }
+    </script>
+
+    
+
     <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.8.0/highlight.min.js"></script>
     <script>hljs.initHighlightingOnLoad();</script>
   </body>