diff --git a/fiddle.html b/fiddle.html
index 3edf8e1..529c31f 100644
--- a/fiddle.html
+++ b/fiddle.html
@@ -39,6 +39,13 @@
 
 <!--<script data-main="playground/fiddle-main.js" src="http://cdnjs.cloudflare.com/ajax/libs/require.js/2.1.15/require.js"></script>-->
 <script data-main="playground/dist/fiddle.min.js" src="//cdnjs.cloudflare.com/ajax/libs/require.js/2.1.15/require.min.js"></script>
+<script>
+(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
+  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
+  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
+})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
+ga('create', 'UA-58169705-1', 'auto');
+ga('send', 'pageview');
+</script>
 </body>
 </html>
-
diff --git a/index-old.html b/index-old.html
index 22dc59b..1c92343 100644
--- a/index-old.html
+++ b/index-old.html
@@ -27,6 +27,13 @@
 <script type="application/javascript">
     initIntro();
 </script>
+<script>
+(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
+  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
+  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
+})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
+ga('create', 'UA-58169705-1', 'auto');
+ga('send', 'pageview');
+</script>
 </body>
 </html>
-
diff --git a/index.html b/index.html
index 5fc4690..22b3b09 100644
--- a/index.html
+++ b/index.html
@@ -88,5 +88,13 @@
 <!--<script data-main="playground/home-main.js" src="//cdnjs.cloudflare.com/ajax/libs/require.js/2.1.15/require.min.js"></script>-->
 <script src="//cdnjs.cloudflare.com/ajax/libs/require.js/2.1.15/require.min.js"></script>
 <script src="playground/dist/home.min.js"></script>
+<script>
+(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
+  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
+  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
+})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
+ga('create', 'UA-58169705-1', 'auto');
+ga('send', 'pageview');
+</script>
 </body>
 </html>
diff --git a/sample/index.html b/sample/index.html
index 1a37c78..f5cad7e 100644
--- a/sample/index.html
+++ b/sample/index.html
@@ -11,6 +11,13 @@
     <div id="preloader" style="text-align: center;">Loading...</div>
 </form>
 <script data-main="main.js" src="http://cdnjs.cloudflare.com/ajax/libs/require.js/2.1.15/require.js"></script>
+<script>
+(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
+  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
+  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
+})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
+ga('create', 'UA-58169705-1', 'auto');
+ga('send', 'pageview');
+</script>
 </body>
 </html>
-