step1:画面を追加する

src/shared/components/organisms/Hello/index.js

@@ -0,0 +1,5 @@
+import React from "react";
+
+export default function Hello(props) {
+  return <div>Hello!</div>;
+}

src/shared/routes/index.js

@@ -13,6 +13,7 @@ import {
   Main,
   NotFound,
   DefaultLayout,
+  Hello,
 } from "./main";
 
 // chunked components
@@ -54,6 +55,8 @@ export default function getRoutes(store: $FIXME) {
 
           <Route path="hn" getComponent={loadHackerNews} />
 
+          <Route path="hello" component={Hello} />
+
           <Route path="login" getComponent={loadLogin} />
           <Route path="logout" onEnter={bindOnEnter(doLogout)} />
 

src/shared/routes/main.js

@@ -9,3 +9,4 @@ export { default as NotFound } from "../components/organisms/NotFound";
 export {
   default as DefaultLayout,
 } from "../components/templates/DefaultLayout";
+export { default as Hello } from "../components/organisms/Hello";