edit pass on T3,4,5, updated images

src/site/docs/tutorials/remove-elements/examples/todo_with_delete/todo_with_delete.dart

Index: src/site/docs/tutorials/remove-elements/examples/todo_with_delete/todo_with_delete.dart
diff --git a/src/site/docs/tutorials/remove-elements/examples/todo_with_delete/todo_with_delete.dart b/src/site/docs/tutorials/remove-elements/examples/todo_with_delete/todo_with_delete.dart
new file mode 100644
index 0000000000000000000000000000000000000000..c68e233338837a5e69ca0b013e5108d3003ecd69
--- /dev/null
+++ b/src/site/docs/tutorials/remove-elements/examples/todo_with_delete/todo_with_delete.dart
@@ -0,0 +1,21 @@
+import 'dart:html';
+
+InputElement toDoInput;
+UListElement toDoList;
+ButtonElement deleteAll;
+
+void main() {
+  toDoInput = query('#to-do-input');
+  toDoList = query('#to-do-list');
+  toDoInput.onChange.listen(addToDoItem);
+  deleteAll = query('#delete-all');
+  deleteAll.onClick.listen((e) => toDoList.children.clear());
+}
+
+void addToDoItem(Event e) {
+  var newToDo = new LIElement();
+  newToDo.text = toDoInput.value;
+  newToDo.onClick.listen((e) => newToDo.remove());
+  toDoInput.value = '';
+  toDoList.children.add(newToDo);
+}