📃 Add rarkey.rar generation instructions

README.md

@@ -164,7 +164,7 @@ Green means it ran successfully, yellow means it is running, red means it failed
 
 ![Download](assets/file-download-dark.png#gh-dark-mode-only)
 
-After extract `rarreg_file.zip`, you will get `rarreg.key`, just drag and drop it into WinRAR.
+After extract `rarreg_file.zip`, you will get `rarreg.key`, just drag and drop it into WinRAR. You can also compress `rarreg.key` into `rarkey.rar` and double-click it to run it, and the license import will take place automatically.
 
 If you get an invalid key, please check [the specific solution](#7-invalid-key).
 
@@ -293,6 +293,8 @@ If you are unable to drag, you can try to put the `rarreg.key` in the following
 C:\Users\yourname\AppData\Roaming\WinRAR\rarreg.key
 ```
 
+You can also compress `rarreg.key` into `rarkey.rar` and double-click it to run it, and the license import will take place automatically.
+
 ## 8. Contributing
 
 ### 8.1 Suggestion

README.zh-CN.md

@@ -164,7 +164,7 @@ WinRAR不是免费软件。如果你想使用它，你应当向 [__RARLAB__](htt
 
 ![Download](assets/file-download-dark.png#gh-dark-mode-only)
 
-将 `rarreg_file.zip` 解压缩后会得到 `rarreg.key`，然后拖动导入 WinRAR 即可。
+将 `rarreg_file.zip` 解压缩后会得到 `rarreg.key`，然后拖动导入 WinRAR 即可。你也可以将 `rarreg.key` 压缩成 `rarkey.rar`，然后双击运行，授权导入将会自动进行。
 
 如果你得到的是 key 是无效的，请查看 [解决方法](#7-无效的key)。
 
@@ -289,6 +289,8 @@ winrar-keygen.exe "Github" "Github.com" | Out-File -Encoding ASCII rarreg.key
 C:\Users\yourname\AppData\Roaming\WinRAR\rarreg.key
 ```
 
+你也可以将 `rarreg.key` 压缩成 `rarkey.rar`，然后双击运行，授权导入将会自动进行。
+
 ### 7.4 关于简体中文版
 
 在 [__RARLAB__](https://www.rarlab.com/) 下载的简体中文版 WinRAR 将会自带广告组件，即使使用了 `rarreg.key` 授权，广告组件依旧会出现。这是由于简体中文代理商的一些意见，RARLAB 已将简体中文安装包的公开链接更换成了带有广告的简体中文安装包。