Introduced simple datepicker
diff --git a/dev/demo/datepicker.html b/dev/demo/datepicker.html
new file mode 100644
index 0000000..e99f021
--- /dev/null
+++ b/dev/demo/datepicker.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Datepicker demo</title>
+    <meta charset="utf-8" />
+    <script data-main="datepickerdemo.js" src="../js/lib/require.js" async="async"></script>
+    <link type="text/css" rel="stylesheet" href="../css/kalamar.css" />
+  </head>
+  <body>
+    <div id="dp"></div>
+  </body>
+</html>
diff --git a/dev/demo/datepickerdemo.js b/dev/demo/datepickerdemo.js
new file mode 100644
index 0000000..ce0913e
--- /dev/null
+++ b/dev/demo/datepickerdemo.js
@@ -0,0 +1,15 @@
+requirejs.config({
+  baseUrl: '../js/src',
+  paths : {
+    'lib': '../lib'
+  }
+});
+
+require(['datepicker', 'lib/domReady'], function (dpClass, domReady) {
+  domReady(function () {
+    var dp = dpClass.create();
+    document.getElementById('dp').appendChild(
+      dp.select(2015,4,12).show(2015,4)
+    );
+  });
+});