Update README.md

Added link to node.js install guide in wiki.

Author: ssmereka

README.md

@@ -22,7 +22,7 @@ Javascript backend and front-end used for authentication and data collection for
 # Getting Started
 A quick guide to installing, configuring, and running an instance of the SDL server.
 
-  1. Install [Node.js](http://nodejs.org/)
+  1. Install [Node.js](http://nodejs.org/) and [NPM](https://www.npmjs.org/), you can use this [guide](https://github.com/smartdevicelink/sdl_server/wiki/Install-Node.js).
   2. Install or setup a [MongoDB](http://docs.mongodb.org/manual/installation/) Database.
   4. Install the dependancies:  `git`, `make`, and `g++`
 
@@ -54,4 +54,4 @@ By default the server will start in production mode.  You can specify different
 
 So for example we can start the server in local mode:
 
-    fox start -l
+    fox start -l