Add jQuery reference and update tests

kendo-ui/kendo-ui-tests.ts

@@ -1,2 +1,26 @@
 /// <reference path="../jquery/jquery.d.ts" />
 /// <reference path="kendo-ui.d.ts" />
+
+var is = {
+    string: (msg: string) => {
+        return true;
+    }
+}
+
+// TreeView
+$(() => {
+    var treeview = <kendo.ui.TreeView>$("#treeview").data("kendoTreeView");
+
+    is.string(treeview.text("#foo"));
+
+    treeview.text("#foo", "bar");
+});
+
+// Window
+$(() => {
+    var window = <kendo.ui.Window>$("#window").data("kendoWindow");
+
+    var dom = $("<em>Foo</em>");
+
+    window.content(dom);
+});

kendo-ui/kendo-ui.d.ts

@@ -3,6 +3,8 @@
 // Definitions by: Telerik <https://github.com/telerik/>
 // Definitions: https://github.com/borisyankov/DefinitelyTyped
 
+/// <reference path="../jquery/jquery.d.ts" />
+
 declare module kendo {
     function culture(): {
         name: string;