Update README.md

Author: Perfare

README.md

@@ -3,3 +3,8 @@ Unity Live2D Cubism 3 提取器
 用于提取Unity AssetBundle打包的Live2D Cubism 3文件  
 使用方法：拖放Live2D文件到exe上  
 Usage: UnityLive2DExtractor.exe file_path...  
+
+### Requirements
+- [.NET Framework 4.6.0](https://dotnet.microsoft.com/download/dotnet-framework/net46)
+- [Microsoft Visual C++ 2013 Redistributable](https://www.microsoft.com/en-us/download/details.aspx?id=40784)
+- [Microsoft Visual C++ 2015 Redistributable](https://www.microsoft.com/en-us/download/details.aspx?id=53840)