Fixing readme to properly reference directly loading module

Author: robskillington

README.md

@@ -32,7 +32,7 @@ A zero configuration configuration loader
 ```js
 // server.js
 var fs = require('fs');
-var fetchConfig = require('playdoh-server/config')
+var fetchConfig = require('zero-config')
 
 var config = fetchConfig(__dirname, {
     dcValue: fs.existsSync('/etc/zero-config/datacenter') ?