README update

Author: msmolka

README.md

@@ -3,6 +3,7 @@
 [![NuGet](https://img.shields.io/nuget/v/ZNetCS.AspNetCore.Compression.svg)](https://www.nuget.org/packages/ZNetCS.AspNetCore.Compression)
 
 A small package to allow decompress incoming request and compress outgoing response inside ASP.NET Core application.
+This package by default supports GZIP and Deflate compressin and decompression.
 
 
 ## Installing