diff --git a/README.md b/README.md
index f1c9b97..e5763fa 100644
--- a/README.md
+++ b/README.md
@@ -33,20 +33,22 @@ Add to your project build.gradle file:
 ```groovy
 buildscript {
   dependencies {
-    classpath "com.android.databinding:dataBinder:1.0-rc3"
     classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
   }
 }
 
-apply plugin: 'com.android.databinding'
+apply plugin: 'com.android.application'
 apply plugin: 'com.neenbedankt.android-apt'
 
 dependencies {
-  compile 'info.izumin.android:droidux:0.2.0'
-  apt 'info.izumin.android:droidux:0.2.0'
+  compile 'info.izumin.android:droidux:0.3.0'
+  apt 'info.izumin.android:droidux:0.3.0'
 }
 ```
 
+And also you need to setup [Data Binding][databinding].
+
+
 ## Usage
 ### Quick example
 
@@ -204,6 +206,64 @@ store.dispatch(new ClearCountAction()).subscribe();
 // [next counter]: 0
 ```
 
+### Undo / Redo
+
+```java
+@Undoable
+@Reducer(TodoList.class)
+class TodoListReducer {
+    @Dispatchable(AddTodoAction.class)
+    public TodoList addTodo(TodoList state, AddTodoAction action) {
+        // ...
+    }
+
+    @Dispatchable(CompleteTodoAction.class)
+    public TodoList completeTodo(TodoList state, CompleteTodoAction action) {
+        // ...
+    }
+}
+
+class TodoList extends ArrayList<TodoList.Todo> implements UndoableStore {
+    @Override
+    public TodoList clone() {
+        // ...
+    }
+
+    public static Todo {
+        // ...
+    }
+}
+
+class AddTodoAction extends Action{
+    // ...
+}
+
+class CompleteTodoAction extends Action{
+    // ...
+}
+
+
+DroiduxTodoListStore store = new DroiduxTodoListStore.Builder()
+        .addReducer(new TodoListReducer())
+        .addInitialState(new TodoList())
+        .build();
+
+store.dispatch(new AddTodoAction("item 1")).subscribe();        // ["item 1"]
+store.dispatch(new AddTodoAction("item 2")).subscribe();        // ["item 1", "item 2"]
+store.dispatch(new AddTodoAction("item 3")).subscribe();        // ["item 1", "item 2", "item 3"]
+store.dispatch(new CompleteTodoAction("item 2")).subscribe();   // ["item 1", "item 3"]
+store.dispatch(new AddTodoAction("item 4")).subscribe();        // ["item 1", "item 3", "item 4"]
+
+store.dispatch(new UndoAction(DroiduxTodoListStore.class)).subscribe();
+// => ["item 1", "item 3"]
+
+store.dispatch(new UndoAction(DroiduxTodoListStore.class)).subscribe();
+// => ["item 1", "item 2", "item 3"]
+
+store.dispatch(new RedoAction(DroiduxTodoListStore.class)).subscribe();
+// => ["item 1", "item 3"]
+```
+
 ### Async action
 
 ```java
@@ -224,9 +284,18 @@ class FetchTodoListAction extends Action {
 new FetchTodoAction().fetch().flatMap(store::dispatch).subscribe();
 ```
 
+### Bindable methods
+
+* `Store#getState()`
+* `Store#isUndoalble()`     // when the reducer is annotated with `@Undoable`
+* `Store#isRedoalble()`     // when the reducer is annotated with `@Undoable`
+
+
 ## Examples
 
 * [TodoMVC](https://github.com/izumin5210/Droidux/tree/master/examples/todomvc)
+* [Todos with Undo](https://github.com/izumin5210/Droidux/tree/master/examples/todos-with-undo)
+
 
 ## License
 
diff --git a/build.gradle b/build.gradle
index db83626..b85a555 100644
--- a/build.gradle
+++ b/build.gradle
@@ -30,7 +30,7 @@ task clean(type: Delete) {
 
 ext {
     def versionMajor = 0
-    def versionMinor = 2
+    def versionMinor = 3
     def versionPatch = 0
     def versionBuild = 0
 
diff --git a/examples/todomvc/src/main/res/values/strings.xml b/examples/todomvc/src/main/res/values/strings.xml
index 2335029..36ad552 100644
--- a/examples/todomvc/src/main/res/values/strings.xml
+++ b/examples/todomvc/src/main/res/values/strings.xml
@@ -1,6 +1,6 @@
 <resources>
-    <string name="app_name">Droidux sample</string>
-    <string name="title_activity_main">Droidux sample</string>
+    <string name="app_name">TodoMVC</string>
+    <string name="title_activity_main">TodoMVC</string>
 
     <string name="btn_add_todo">Add</string>
     <string name="edit_new_todo_hint">new task</string>