changed default

src/main/java/edu/uchicago/mpcs/topics/Application.java

@@ -57,13 +57,13 @@ public class Application {
             // item
             itemRepository.save(new Item("iphone", "it's an iphone", 1L,
                     33.33, 550.55, "https://encrypted-tbn3.gstatic.com/shopping?q=tbn:ANd9GcSqIeuWzEOhS5w1aXzgW9wVkXJgK2fkSScWXZp1WlsorpiGmizGn_qOPZf5JMEXKN6ldEh9FXo&usqp=CAE", 2L,
-                    true, null, null ));
+                    true, null, "2019-01-01T20:29:59"));
             itemRepository.save(new Item("tesla", "model x", 1L,
                     399.99, 155555.55, "https://www.tesla.com/sites/default/files/images/homepage/20180710/mx/homepage-modelx.jpg?20181117", 2L,
-                    true, null, null ));
+                    true, null, "2018-12-04T23:00:00" ));
             itemRepository.save(new Item("ipad", "ipad new", 1L,
                     99.99, 444.55, "https://store.storeimages.cdn-apple.com/4981/as-images.apple.com/is/image/AppleInc/aos/published/images/i/pa/ipad/hero/ipad-hero-unselected-201803_GEO_US?wid=490&hei=674&fmt=jpeg&qlt=95&op_usm=0.5,0.5&.v=1539023642155", 2L,
-                    true, null, null ));
+                    true, null, "2018-12-05T10:02:32" ));
 
 
             // category