Construindo um website em React

diff --git a/src/App.js b/src/App.js
index 45f36fa..30f7427 100644
--- a/src/App.js
+++ b/src/App.js
@@ -1,10 +1,12 @@
 import React from 'react'
 import './App.css'
 import Menu from './Menu'
+import Header from './Header'

 const App = _ =>
   <>
     <Menu/>
+    <Header/>
   </>

 export default App

3$ git-apply ah.diff src/App.js