add sponsor badge

Author: dadhi

README.md

@@ -10,6 +10,7 @@ DryIoc is fast, small, full-featured IoC Container for .NET
 [![Gitter](https://img.shields.io/gitter/room/nwjs/nw.js.svg)](https://gitter.im/dadhi/DryIoc)
 [![Slack](https://img.shields.io/badge/Slack-Chat-blue.svg)](https://dryioc.slack.com)
 [![Follow on Twitter](https://img.shields.io/twitter/follow/dryioc.svg?style=social&label=Follow)](http://twitter.com/intent/user?screen_name=DryIoc)
+[![Sponsor](https://img.shields.io/static/v1?label=Sponsor&message=%E2%9D%A4&logo=GitHub&link=https://github.com/sponsors/dadhi&color=orange)]
 
 [Autofac]: https://code.google.com/p/autofac/
 [MEF]: http://mef.codeplex.com/