Form Widget

- added public js code to handle validation and ajax submit
- added widget initializer
- added form widget
- added acceptance test for adding the widget

assets/js/src/public.js

@@ -1,8 +1,22 @@
-define('public', ['jquery'], function(jQuery) {
-  jQuery(function($) {
-    // dom ready
-    $(function() {
+define('public', ['jquery', 'jquery-validation'],
+  function($) {
 
+    function isSameDomain(url) {
+      var link = document.createElement('a');
+      link.href = url;
+      return (window.location.hostname === link.hostname);
+    }
+
+    $(function() {
+      // setup form validation
+      $('form.mailpoet_form').validate({
+        submitHandler: function(form) {
+          console.log(form);
+          $(form).ajaxSubmit({
+            target: "#result"
+          });
+        }
+      });
     });
-  });
-});
+  }
+);