added Docker Hub link

Author: schmunk42

README.md

@@ -4,6 +4,10 @@
 
 A very simple container to redirect HTTP traffic to another server, based on `nginx`
 
+## Resources
+
+- [Docker Hub](https://hub.docker.com/r/schmunk42/nginx-redirect/)
+
 ## Configuration
 
 ### Environment variables
@@ -24,4 +28,4 @@ With `docker`
 
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-Built by [dmstr](http://diemeisterei.de)
+Built by [dmstr](http://diemeisterei.de)