diff --git a/demo/Web.config b/demo/Web.config
new file mode 100644
index 00000000..6b57f21d
--- /dev/null
+++ b/demo/Web.config
@@ -0,0 +1,23 @@
+﻿<?xml version="1.0"?>
+<configuration>
+  <!-- Standard ASP.NET configuration; see http://go.microsoft.com/fwlink/?LinkId=169433 -->
+  <system.web>
+    <compilation debug="false" targetFramework="4.0"/>
+  </system.web>
+
+  <!-- Register MIME type for cache manifest -->
+  <system.webServer>
+    <staticContent>
+      <mimeMap fileExtension=".appcache" mimeType="text/cache-manifest"/>
+    </staticContent>
+  </system.webServer>
+
+  <!-- Disable caching for cache manifest file -->
+  <location path="offline.appcache">
+    <system.webServer>
+      <staticContent>
+        <clientCache cacheControlMode="DisableCache"/>
+      </staticContent>
+    </system.webServer>
+  </location>
+</configuration>
diff --git a/demo/default.htm b/demo/default.htm
index 21ff6c8a..be0c5cd6 100644
--- a/demo/default.htm
+++ b/demo/default.htm
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html xmlns="http://www.w3.org/1999/xhtml">
+<html xmlns="http://www.w3.org/1999/xhtml" manifest="offline.appcache">
 <head>
   <meta charset="utf-8"/>
   <link href="default.css" rel="stylesheet" type="text/css"/>
diff --git a/demo/offline.appcache b/demo/offline.appcache
new file mode 100644
index 00000000..df072d72
--- /dev/null
+++ b/demo/offline.appcache
@@ -0,0 +1,10 @@
+CACHE MANIFEST
+# 2015-05-05
+browser-polyfills.js
+default.css
+default.htm
+default.js
+favicon.ico
+markdown-it.min.js
+markdownlint-browser.js
+require-stub.js
