docs: list supported compression codings

dougwilson · dougwilson · commit 857fc7c2f817 · 2015-02-01T15:51:22.000-05:00
diff --git a/README.md b/README.md
@@ -8,6 +8,11 @@
 
 Node.js compression middleware.
 
+The following compression codings are supported:
+
+  - deflate
+  - gzip
+
 ## Install
 
 ```bash
