update document

README.cn.md

@@ -69,6 +69,18 @@ Extra Network支持两种预览图命名：`model_name.png` 和 `model_name.prev
 civitai不是每个图片都有关键词，一个模型中，也不是所有预览图关键词都一样。所以这里是遍历所有civitai预览图信息，加载第一个有关键词的。
 
 
+## SHA256
+为了创建文件的SHA256，插件需要读取整个文件。对于大尺寸文件，就会很慢。
+
+默认，插件使用内存优化的SHA256生成方法，就不会卡住你的系统。所以，如果你想要在扫描模型的同时使用电脑，就不要取消勾选这个优化。  
+
+有两种情况，这个SHA256无法从civitai找到对应模型：
+* 太老的模型，civitai没有存储SHA256.
+* 模型作者，静静的换掉了模型文件，但没有修改描述和版本。所以，虽然网页上看不出来，但实际上civitai上的 和你本地的模型文件，已经不是同一个文件了。  
+
+这些情况下，你可以在插件上，通过提供模型页面的url，来获取模型信息文件。（v1.3新功能）
+
+
 Enjoy! 
 
 

README.md

@@ -74,11 +74,20 @@ When you click the button "Use prompt from preview image", it does not use the p
 
 On civitai, a model's preview images may not has prompt. This extension will check this model's all civitai preview images' information and use the first one has prompt in it.  
 
+## SHA256
+To create a file SHA256, it need to read the whole file to generate a hash code. It gonna be slow for big files. 
+
+Default, it uses a Memory Optimized SHA256 which won't stuck your system. So, do not uncheck it if you want to use your compute when scanning.  
+
+There are 2 cases this hash code can not find the model on civitai:
+* Some old models, which do not have SHA256 code on civitai.
+* The model's owner changed file on civitai, but does not change version number and description. So, the file on civitai is actually not the one on your manchine.  
+
+In these cases, you can always link a model to civitai by filling its URL in this extension from v1.3.
+
 
 Enjoy!
 
-# Known Issues
-* It cannot force a model link to Civitai by model ID for now. This will be added later.
 
 # Change Log
 ## v1.3