docs: update readMe

Author: xianshenglu

README-ZH.MD

@@ -5,12 +5,13 @@
 ### 功能
 
 - 测试本地网络到 cloudflare 节点的速度
-
 - 根据你的测试结果，生成统计数据，可以排序，得到最好的结果
+- 自定义 Cloudflare Ipv4 列表。(如果你想一直用自定义的数据，需要开启"保存数据到设备"。) 你也许可以用它来测试其他 CDN 厂商的节点速度，如果你再修改测试地址的话。
 
 <div style="display: flex;flex-flow:row wrap;">
     <img src="./assets/images/test-run-min-zh.jpg" height="600">
     <img src="./assets/images/test-statistics-min-zh.jpg" height="600">
+    <img src="./assets/images/test-config-min-zh.jpg" height="600">
 </div>
 
 ### 灵感来源于

README.MD

@@ -4,12 +4,14 @@
 
 ### Functions
 
-- test cloudflare-ip as many as you want
-- generate a history statistics based on your test results.
+- Test cloudflare-ip as many as you want
+- Generate a history statistics based on your test results.
+- Customize Cloudflare Ipv4 list. (Need to enable "Save all data to device" if you want to keep the customization all the time.) You might be able to test other cdn vendors' nodes by changing the Ipv4 list and testUrl.
 
 <div style="display: flex;flex-flow:row wrap;">
     <img src="./assets/images/test-run-min.jpg" height="600">
     <img src="./assets/images/test-statistics-min.jpg" height="600">
+    <img src="./assets/images/test-config-min.jpg" height="600">
 </div>
 
 ### Inspired by