Merge pull request #671 from Nash0x7E2/sponsors/stream

Add sponsor section to README.MD

Author: renefloor

README.md

@@ -5,6 +5,13 @@
 
 A flutter library to show images from the internet and keep them in the cache directory.
 
+
+
+## Sponsors 
+ <a href="https://getstream.io/chat/flutter/tutorial/?utm_source=github&utm_medium=github_rep[%E2%80%A6]&utm_content=Developer&utm_campaign=Github_Oct2021_FlutterChat" target="_blank"><img width="250px" src="https://stream-blog.s3.amazonaws.com/blog/wp-content/uploads/fc148f0fc75d02841d017bb36e14e388/Stream-logo-with-background-.png"/></a><br/><span><a href="https://getstream.io/chat/flutter/tutorial/?utm_source=github&utm_medium=github_rep[%E2%80%A6]&utm_content=Developer&utm_campaign=Github_Oct2021_FlutterChat" target="_blank">Try the Flutter Chat Tutorial 💬</a></span>
+        
+        
+
 ## How to use
 The CachedNetworkImage can be used directly or through the ImageProvider.
 Both the CachedNetworkImage as CachedNetworkImageProvider have minimal support for web. It currently doesn't include caching.