rename koa2 to koa

koa/koa-tests.ts

@@ -0,0 +1,20 @@
+/// <reference path="koa.d.ts" />
+import * as Koa from "koa";
+
+const app = new Koa();
+
+app.use((ctx, next) => {
+  const start: any = new Date();
+  return next().then(() => {
+    const end: any = new Date();
+    const ms = end - start;
+    console.log(`${ctx.method} ${ctx.url} - ${ms}ms`);
+  });
+});
+
+// response
+app.use(ctx => {
+  ctx.body = "Hello World";
+});
+
+app.listen(3000);