add example for multiple app server by koa

Author: lovemyliwu

client_source/arrange.ts

@@ -0,0 +1,10 @@
+import Vue from 'vue';
+import apolloProvider from './apollo';
+import App from './components/App.vue';
+
+let app = new Vue({
+    el: '#app',
+    provide: apolloProvider.provide(),
+    render: createElement => createElement(App),
+});
+export default app;