add how to use with negroni section

README.md

@@ -1,16 +1,29 @@
 # delay
-Middleware for adding delays (latency) to your endpoint. Intended to simulate latency for testing it's effects on faster networks.
+Middleware for adding delays (latency) to your endpoint. Intended to simulate latency for testing its effects on faster networks.
 
 Add a delay of a specified duration by adding an http header to your request.
 
-The header name is `X-Add-Delay`. The value can be any value parsable by [golang's time.ParseDuration](http://golang.org/pkg/time/#ParseDuration).
+The header name is `X-Add-Delay`. The value can be any value parsable by [golang's time.ParseDuration](http://golang.org/pkg/time/#ParseDuration). For example, `300ms`, `2.5s`, and `0.5m` are all valid values. Technically `-1.5s` is a valid value, but it won't actually speed up your end point :p
 
 If the value is not parsable it will not add any latency. It will behave as if the header wasn't there at all.
 
-Sorry, adding negative delay won't speed up your endpoints :p
-
-## Examples
+## Header Examples
 
 `X-Add-Delay: 300ms`
 
 `X-Add-Delay: 2.5s`
+
+## How to use it with negroni
+
+There is no configuration.
+
+Just slip it in as negroni middleware:
+
+	import (
+	    "github.com/codegangsta/negroni"
+	    "github.com/jeffbmartinez/delay"
+	)
+
+    n := negroni.New(...)
+	n.Use(delay.Middleware{})
+	// ...