add router and route containers

src/router.js

@@ -0,0 +1,41 @@
+import Vue from 'vue';
+import VueRouter from 'vue-router';
+
+import App from './App.vue';
+
+import Customers from './containers/Customers.vue';
+import Orders from './containers/Orders.vue';
+import About from './containers/About.vue';
+
+Vue.use(VueRouter);
+
+const routes = [{
+  path: '/',
+  name: 'app',
+  component: App,
+  children: [
+    {
+      path: 'customers',
+      name: 'customers',
+      component: Customers,
+    }, {
+      path: 'orders',
+      name: 'orders',
+      component: Orders,
+    }, {
+      path: 'about',
+      name: 'about',
+      component: About,
+    }, {
+      path: '*',
+      redirect: 'customers',
+    },
+  ],
+}];
+
+const router = new VueRouter({
+  mode: 'hash',
+  routes,
+});
+
+export default router;