update readme

Author: fuliangjun

README.md

@@ -37,13 +37,16 @@ In the SD Web UI, configure the desired options, and click the "Export" button t
 In the SD Web UI, click the "FileBox", select the corresponding flow file, and import the parameters from the file.
 You can also directly drag and drop the flow file into the "FileBox" for importing.
 
+**Currently, the plugin supports versions 1.5 and above, and compatibility testing for earlier versions has not been conducted.**  
+**If not due to compatibility issues with essential functionalities, it is strongly recommended to upgrade to version 1.6 or above before using this plugin!**
+
 ### Examples
 
 You can find several official examples in the example/ folder. If you want to try out more possibilities, please visit [**Our open-source community**](https://www.lightflow.ai/) for more public examples. 
 
 ### Contributing
 
-If you have any comments, suggestions, or encounter issues with our project, please feel free to raise them through an issue, and we also welcome pull requests at any time!
+If you have any comments, suggestions, or encounter issues with our project, please feel free to raise them through an issue, and we also welcome pull requests at any time!  
 You are also more than welcomed to share your own LightDiffusionFlow on [**Our open-source community**](https://www.lightflow.ai/). 
 
 ### Credits

README_CN.md

@@ -38,6 +38,8 @@ Stable Diffusion Web UI 以下简称 SD Web UI。
     - 在SD Web UI上，点击文件框选择对应的flow文件，即可导入文件中的设置。
     - 也可以直接把flow文件拖入文件框内完成导入。
 
+**目前，该插件支持1.5及以上版本，尚未对早期版本进行兼容性测试。**  
+**如果不是因为基本功能的兼容性问题，强烈建议在使用此插件之前升级到1.6或更高版本。**
 ### 注意事项
 
 * 每次导入新的flow文件之前，最好刷新一下SD Web UI页面，因为插件只会修改已保存的参数选项。