update document for more details

README.cn.md

@@ -21,7 +21,7 @@ Stable Diffusion Webui 扩展Civitai助手，用于更轻松的管理和使用Ci
 
 ![](img/extension_tab.jpg)  
 
-点击，就会扫描所有模型，生成SHA256码，用于从civitai获取模型信息和预览图。  
+点击，就会扫描所有模型，生成SHA256码，用于从civitai获取模型信息和预览图。**扫描需要很久，耐心等待**。
 
 每个模型，本扩展都会创建一个json文件，用来保存从civitai得到的模型信息。这个文件会保存在模型同目录下，名称为："模型名字.civitai.info"。  
 
@@ -47,10 +47,23 @@ Stable Diffusion Webui 扩展Civitai助手，用于更轻松的管理和使用Ci
   
 ![](img/model_card.jpg)  
 
-如果你刷新了卡片页面，这些额外的功能按钮就会消失。这时只要点击`Refresh Civitai Helper`，他们就会被重新添加到卡片上。  
+如果你没有看到这些额外的按钮，只要点击`Refresh Civitai Helper`，他们就会被重新添加到卡片上。  
 
 ![](img/refresh_ch.jpg)  
 
+每次当Extra Network刷新，他都会删除掉额外的修改，我们的按钮就会消失。这时你就需要点击`Refresh Civitai Helper`把这些功能添加回去。
+
+## 预览图
+Extra Network支持两种预览图命名：`model_name.png` 和 `model_name.preview.png`。其中，`model_name.png`优先级较高。
+
+当优先级较高的预览图不存在，他就会自动使用`model_name.preview.png`。
+
+这样，你自己创建的预览图 和 网络下载的预览图，能够同时存在，并优先使用你自己创建的。
+
+## 关键词
+卡片上，添加关键词按钮，是添加从civitai预览图中得到的关键词，而不是你自己创建的图片的关键词。
+
+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。
 
 
 Enjoy! 

README.md

@@ -30,6 +30,8 @@ Go to extension tab "Civitai Helper". There is a button called "Scan model".
 
 Click it and the extension will scan all your models to generate SHA256 hashes, using them to retreive model information and preview images from Civitai.
 
+**Scanning takes time, just wait it finish**
+
 For each model, it will create a json file to save all model info from Civitai. This model info file will be "Your_model_name.civitai.info" in your model folder.
 
 ![](img/model_info_file.jpg)
@@ -37,7 +39,7 @@ For each model, it will create a json file to save all model info from Civitai.
 If a model info file already exists, it will be skipped. If a model cannot be found in Civitai, it will create an empty model info file, so the model won't be scanned twice.
 
 ### Adding New Models
-When you have some new models, just click this button again, to get new model's information and preview images.
+When you have some new models, just click scan button again, to get new model's information and preview images. It won't scan the same model twice. 
 
 ## Model Card
 **(Use this only after you scanned your models!)** 
@@ -54,10 +56,20 @@ Move your mouse on to the bottom of a model card. It will show 4 icon buttons:
 
 ![](img/model_card.jpg)
 
-If you click the Refresh Button of extra network, those additional buttons will be removed. You can click the `Refresh Civitai Helper` button to bring them back.
+If these additional buttons are not there, click the `Refresh Civitai Helper` button to bring them back.  
 
 ![](img/refresh_ch.jpg)  
+Everytime after Extra Network tab refreshed, it will remove all these additional buttons. So, you need to click `Refresh Civitai Helper` button to bring them back.  
 
+## Preview Image
+Extra network uses both `model_file.png` and `model_file.preview.png` as preview image. But `model_file.png` has higher priority, because it is created by yourself.  
+
+When you don't have the higher priority one, it will use the other automatically.  
+
+## Prompt
+When you click the button "Use prompt from preview image", it does not use the prompt from your own preview image. It uses the one from civitai's  preview image.  
+
+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.  
 
 
 Enjoy!
@@ -66,6 +78,9 @@ Enjoy!
 * It cannot force a model link to Civitai by model ID for now. This will be added later.
 
 # Change Log
+## v1.2.1
+* Add more error checking to work with different versions of SD webui. 
+
 ## v1.2
 * Support customer model folder
 * Support readable model info file