update docs

ReadMe.md

@@ -145,6 +145,15 @@ It will be called after the blog is decrypted.
 
 Demo: [Callback Example](https://mhexo.github.io/2020/12/06/Callback-Test/).
 
+### After Decrypt Event
+Thanks to @[f-dong](https://github.com/f-dong), we now will trigger a event named `hexo-blog-decrypt`, so you can add a call back to listen to that event.
+
+```
+// trigger event
+var event = new Event('hexo-blog-decrypt');
+window.dispatchEvent(event);
+```
+
 ### Encrypt TOC
 
 If you has a post with TOC, you should change the code of your template. Take the default theme 'landscape' as an example:

ReadMe.zh.md

@@ -151,6 +151,15 @@ It will be called after the blog decrypted.
 
 例子在: [Callback 例子](https://mhexo.github.io/2020/12/06/Callback-Test/).
 
+### 解密后的触发事件
+感谢 @[f-dong](https://github.com/f-dong), 我们现在会在解密完成后触发一个 `hexo-blog-decrypt` 事件, 你们可以编写 callback 来监听该事件.
+
+```
+// trigger event
+var event = new Event('hexo-blog-decrypt');
+window.dispatchEvent(event);
+```
+
 ### 对 TOC 进行加密
 
 如果你有一篇文章使用了 TOC，你需要修改模板的部分代码。这里用 landscape 作为例子：

package.json

@@ -29,7 +29,7 @@
     "test": "echo \"Error: no test specified\" && exit 1",
     "lint": "eslint --ext .js ./"
   },
-  "version": "3.1.6",
+  "version": "3.1.8",
   "devDependencies": {
     "eslint": "^6.2.2"
   }