Update version to 2.0.8

Author: myloveCc

README.md

@@ -8,7 +8,16 @@ NETCore encrypt and decrpty tool，Include AES，RSA，MD5，SAH1，SAH256，SHA
 
 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 2.0.7
+//Package Manager
+
+Install-Package NETCore.Encrypt -Version 2.0.8
+
+//.NET CLI
+dotnet add package NETCore.Encrypt --version 2.0.8
+
+//PackageReference
+<PackageReference Include="NETCore.Encrypt" Version="2.0.8" />
+
 ```
 
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