added not found placeholder in add series

added path validation to add series

UI/AddSeries/NotFoundView.js

@@ -0,0 +1,20 @@
+'use strict';
+
+define(
+    [
+        'marionette'
+    ], function (Marionette) {
+
+        return Marionette.CompositeView.extend({
+            template: 'AddSeries/NotFoundTemplate',
+
+            initialize: function (options) {
+                this.options = options;
+            },
+
+            templateHelpers: function () {
+                return  this.options;
+            }
+
+        });
+    });