Update readme

README.md

@@ -1,4 +1,31 @@
-## hono
+# hono
+
+Minimal web framework for Cloudflare Workers.
+
+## Install
+
+```sh
+$ yarn add hono
+```
+
+or
+
+```sh
+$ npm install hono
+```
+
+## Hello hono!
+
+```js
+const Hono = require("hono");
+const app = Hono();
+
+app.get("/", () => new Response("Hono!!"));
+
+app.fire(); // call `addEventListener`
+```
+
+Then, run `wrangler dev`.
 
 ## Author