diff --git a/img/screencapture.png b/img/screencapture.png
new file mode 100644
index 0000000..a83a546
Binary files /dev/null and b/img/screencapture.png differ
diff --git a/index.html b/index.html
index ee1c277..15f09ef 100644
--- a/index.html
+++ b/index.html
@@ -15,7 +15,7 @@
   <link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/v/bs4/dt-1.10.18/datatables.min.css"/>
   <script type="text/javascript" src="https://cdn.datatables.net/v/bs4/dt-1.10.18/datatables.min.js"></script>
 
-  <script src="http://d3js.org/d3.v3.min.js"></script>
+  <script src="https://d3js.org/d3.v3.min.js"></script>
 
 
   <style>