添加接口反代说明；

README.md

@@ -1,2 +1,33 @@
 # uptime-status
- A uptime status dashboard based on UptimeRobot API
+
+一个基于 UptimeRobot API 的在线状态面板
+
+An uptime status dashboard based on UptimeRobot API
+
+------
+
+### 基于 Cloudflare Workers 搭建 UptimeRobot API 代理，以解决官网 API 跨域问题
+
+Build an UptimeRobot API proxy based on **Cloudflare Workers** to solve the cross-domain issue of official API
+
+```
+const handleRequest = async ({ request }) => {
+  let url = new URL(request.url);
+  let response = await fetch('https://api.uptimerobot.com' + url.pathname, request);
+  response = new Response(response.body, response);
+  response.headers.set('Access-Control-Allow-Origin', '*');
+  response.headers.set('Access-Control-Allow-Methods', '*');
+  response.headers.set('Access-Control-Allow-Credentials', 'true');
+  response.headers.set('Access-Control-Allow-Headers', 'Content-Type,Access-Token');
+  response.headers.set('Access-Control-Expose-Headers', '*');
+  return response;
+}
+
+addEventListener('fetch', (event) => {
+  event.respondWith(handleRequest(event));
+});
+```
+
+修改 `config.js` 中的 `ApiDomian` 为你的域名；
+
+Modify `ApiDomian` in `config.js` to your domain;

public/config.js

@@ -10,6 +10,7 @@ window.Config = {
   // UptimeRobot Api 域名
   // 只需填写域名部分，默认为官网域名
   // 因官网 API 时不时的会 CROS 报错，可填自定义反代域名
+  // 详见 https://github.com/yb/uptime-status/ 说明
   ApiDomain: 'api.uptimerobot.com',
 
   // UptimeRobot Api Keys