Switch to Koa, more es6

lib/react-handler.js

@@ -0,0 +1,19 @@
+var Router = require('react-router');
+
+export default function* (routes, url) {
+  let router = Router.create({
+    location: url,
+    routes: routes,
+    onAbort(aborted) {
+      let { to, params, query } = aborted;
+
+      this.redirect(Router.makePath(to, params, query));
+    }
+  });
+
+  return new Promise(function(resolve) {
+    router.run((Handler) => {
+      resolve(Handler);
+    });
+  });
+}