Update README.md

ldqk · Apr 15, 2020 · 698e3ea · 698e3ea
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@@ -908,6 +908,11 @@ public override Post SavePost(Post t)
     return t;
 }
 ```
+### 38.敏感信息掩码
+```csharp
+"13123456789".Mask(); // 131****5678
+"[email protected]".MaskEmail(); // a****[email protected]
+```
 
 # Asp.Net MVC和Asp.Net Core的支持断点续传和多线程下载的ResumeFileResult