updated: using_listview example with working implementation

using_listview/lib/contactlist/contact_list_item.dart

@@ -0,0 +1,16 @@
+import 'package:flutter/material.dart';
+import 'package:using_listview/contactlist/modal/contact.dart';
+
+class ContactListItem extends StatelessWidget {
+  final ContactModal _contactModal;
+
+  ContactListItem(this._contactModal);
+
+  @override
+  Widget build(BuildContext context) {
+    return new ListTile(
+        leading: new CircleAvatar(child: new Text(_contactModal.fullName[0])),
+        title: new Text(_contactModal.fullName),
+        subtitle: new Text(_contactModal.email));
+  }
+}