update examples for new syntax

Author: yyx990803

examples/modal/index.html

@@ -57,7 +57,7 @@
     <div id="app">
       <button id="show-modal" @click="showModal = true">Show Modal</button>
       <!-- use the modal component, pass in the prop -->
-      <modal :show&="showModal">
+      <modal :show.sync="showModal">
         <!--
           you can use custom content here to overwrite
           default content

examples/todomvc/index.html

@@ -14,7 +14,7 @@ <h1>todos</h1>
 					autofocus autocomplete="off"
 					placeholder="What needs to be done?"
 					v-model="newTodo"
-					@keyup:enter="addTodo">
+					@keyup.enter="addTodo">
 			</header>
 			<section class="main" v-show="todos.length" v-cloak>
 				<input class="toggle-all" type="checkbox" v-model="allDone">
@@ -31,8 +31,8 @@ <h1>todos</h1>
 							v-model="todo.title"
 							v-todo-focus="todo == editedTodo"
 							@blur="doneEdit(todo)"
-							@keyup:enter="doneEdit(todo)"
-							@keyup:esc="cancelEdit(todo)">
+							@keyup.enter="doneEdit(todo)"
+							@keyup.esc="cancelEdit(todo)">
 					</li>
 				</ul>
 			</section>