ETag doc.

README.markdown

@@ -40,15 +40,16 @@ curl -d "GET/hello" http://127.0.0.1:7379/
 * Multi-server support, using consistent hashing.
 * Send your ideas using the github tracker, on twitter [@yowgi](http://twitter.com/yowgi) or by mail to n.favrefelix@gmail.com.
 * Add WebSocket support, allow cross-origin XHR.
-* Recognize `If-None-Match`, and send ETags.
+* Send an `ETag` header, and recognize `If-None-Match`.
 
 # HTTP error codes
 * Unknown HTTP verb: 405 Method Not Allowed
 * Redis is unreachable: 503 Service Unavailable
 * Could also be used:
 	* Timeout on the redis side: 503 Service Unavailable (this isn't supported by HiRedis yet).
-	* Missing key: 404 Not Found
-	* Unauthorized command (disabled in config file): 403 Forbidden
+	* Missing key: 404 Not Found.
+	* Unauthorized command (disabled in config file): 403 Forbidden.
+	* Matching ETag sent using `If-None-Match`: 304 Not Modified.
 
 # Command format
 The URI `/COMMAND/arg0/arg1/.../argN` executes the command on Redis and returns the response to the client. GET and POST are supported: