Update README.md

Author: myloveCc

README.md

@@ -2,12 +2,11 @@
 [![NuGet](https://img.shields.io/nuget/v/NETCore.Encrypt.svg)](https://nuget.org/packages/NETCore.Encrypt)
 [![NETCore CLR](https://img.shields.io/badge/.NETCore%20Clr-2.0-brightgreen.svg)](https://www.microsoft.com/net/core)
 
-
 NETCore encrypt and decrpty tool，Include AES，RSA，MD5，SAH1，SAH256，SHA384，SHA512 and more
 
 To install NETCore.Encrypt, run the following command in the [Package Manager Console](https://docs.microsoft.com/zh-cn/nuget/tools/package-manager-console)
 ```
-Install-Package NETCore.Encrypt -Version 2.0.1
+Install-Package NETCore.Encrypt -Version 2.0.2
 ```
 
 ***
@@ -55,8 +54,32 @@ Install-Package NETCore.Encrypt -Version 2.0.1
     var encryptedStr = "xxxx";
     var decrypted = EncryptProvider.AESDecrypt(encryptedStr, key, iv);
     ```
+## DES
+
+- #### Create DES Key
+
+  ```csharp
+  
+  //des key length is 24 bit
+  var desKey = EncryptProvider.CreateDesKey();
+  
+  ```
+
+- #### DES encrypt
+
+    ```csharp
+    var srcString = "des encrypt";
+    var encrypted = EncryptProvider.DESEncrypt(srcString, key);
+    ```
 
-  ## RSA
+- #### DES decrypt
+
+    ```csharp
+    var encryptedStr = "xxxx";
+    var decrypted = EncryptProvider.DESDecrypt(encryptedStr, key);
+    ```
+
+## RSA
 
   - #### Enum RsaSize