add install instructions

defunctzombie · defunctzombie · commit 2a6e64414753 · 2013-11-22T12:53:55.000-05:00
diff --git a/README.md b/README.md
@@ -3,3 +3,9 @@
 [![Build Status](https://travis-ci.org/defunctzombie/node-util.png?branch=master)](https://travis-ci.org/defunctzombie/node-util)
 
 node.js [util](http://nodejs.org/api/util.html) module as a module
+
+## install via [npm](npmjs.org)
+
+```shell
+npm install util
+```
