Async example

まだ誰も着手していません。

Quote from https://jaredforsyth.com/2017/06/23/when-will-reasonml-be-ready/:

> The OCaml community has some pretty fundamental fragmentations (there are three incompatible versions of the standard library, two incompatible ways to handle async), and documentation is generally pretty sparse. We’re hoping to establish good “batteries included” standard library (that will work for both js and native), but it will take some time.

To JS programmers, async pattern is very common nowadays, we are get used to it. Hence, been said that "there is no standard for async pattern in OCaml" made me worried how to convert my async codes into Reason counterpart.

It would be nice if there is a tutorial about how to do so in OCaml. (e.g. extend the Todo app to send the new item to a simple backend server)

リンクされた記事とTodoアプリの例を出発点として使用し、まずasyncパターンと、アプリが新しい項目をバックエンドに送信する方法を特定してください。完了とは、Reason/OCamlとJavaScriptの読者向けにそのフローを説明し、手順に沿って進められるだけの十分なステップを含むチュートリアルがあることです。

索引モデルが issue の本文から書いたものです。