Add todoapp benchmark

bench/implementations/ember-2.6.3/app/templates/active.hbs

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+{{todo-list todos=todos}}

bench/implementations/ember-2.6.3/app/templates/application.hbs

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+<section id="todoapp">
+  <header id="header">
+    <h1>todos</h1>
+    <input type="text" id="new-todo" class="new-todo" onkeydown={{action 'createTodo'}} placeholder="What needs to be done?" autofocus>
+  </header>
+    {{outlet}}
+    {{#if (gt model.length 0)}}
+      <footer id="footer">
+        <span id="todo-count"><strong>{{remaining.length}}</strong> {{pluralize 'item' remaining.length}} left</span>
+        <ul id="filters">
+          <li>{{#link-to "index" activeClass="selected"}}All{{/link-to}}</li>
+          <li>{{#link-to "active" activeClass="selected"}}Active{{/link-to}}</li>
+          <li>{{#link-to "completed" activeClass="selected"}}Completed{{/link-to}}</li>
+        </ul>
+        {{#if completed.length}}
+          <button id="clear-completed" onclick={{action 'clearCompleted'}}>Clear completed</button>
+        {{/if}}
+      </footer>
+    {{/if}}
+</section>
+<footer id="info">
+  <p>Double-click to edit a todo</p>
+  <p>
+    Created by
+    <a href="http://github.com/cibernox">Miguel Camba</a>,
+    <a href="http://github.com/addyosmani">Addy Osmani</a>
+  </p>
+  <p>Part of <a href="http://todomvc.com">TodoMVC</a></p>
+</footer>

bench/implementations/ember-2.6.3/app/templates/completed.hbs

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+{{todo-list todos=todos}}

bench/implementations/ember-2.6.3/app/templates/components/todo-item.hbs

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+<div class="view">
+  <input type="checkbox" class="toggle" checked={{todo.completed}} onchange={{action 'toggleCompleted'}}>
+  <label ondblclick={{action 'startEditing'}}>{{todo.title}}</label>
+  <button onclick={{action 'removeTodo'}} class="destroy"></button>
+</div>
+<input type="text" class="edit" value={{todo.title}} onblur={{action 'doneEditing' value='target.value'}} onkeydown={{action 'handleKeydown'}} autofocus>

bench/implementations/ember-2.6.3/app/templates/components/todo-list.hbs

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+{{#if todos.length}}
+  {{#if canToggle}}
+    <input type="checkbox" id="toggle-all" checked={{allCompleted}} onchange={{action 'toggleAll'}}>
+  {{/if}}
+  <ul id="todo-list" class="todo-list">
+    {{#each todos as |todo|}}
+      {{todo-item todo=todo onStartEdit=(action 'disableToggle') onEndEdit=(action 'enableToggle')}}
+    {{/each}}
+  </ul>
+{{/if}}

bench/implementations/ember-2.6.3/app/templates/index.hbs

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+{{#if model.length}}
+  {{todo-list todos=model}}
+{{/if}}