README file copied to sample project.

datasources/plugin_nodejs_sample/README.md

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+freeboard.io-node.js
+=========
+
+This is a datasource plugin to connect freeboard.io dashboards to real-time node.js servers.
+
+  - Subscribe to real-time events using WebSockets (Sockets.io)
+  - Listen for events from different servers
+  - Restrict events from only certain [namespaces or rooms](http://socket.io/docs/rooms-and-namespaces/)
+
+Installation
+--------------
+
+1. Place the file ```/datasources/plugin_node.js``` in  ```/js/freeboard/plugins``` of your freeboard.io installation.
+
+2. Edit your freeboard.io main HTML file and add the plugin to the header:
+
+```js
+<script type="text/javascript">
+	head.js(
+			...
+			"js/freeboard/plugins/plugin_node.js",
+```
+
+Testing
+--------------
+
+1. You can test this plugin by running the node.js **sample server** (located in the ```/datasources/plugin_nodejs_sample/``` folder) with this command:
+
+```js
+node plugin_node_sample_server.js
+```
+
+2. Open the **sample freeboard.io client** with your browser, e.g. Chrome, located at:
+
+```js
+/datasources/plugin_nodejs_sample/plugin_node_sample_client.html
+```
+
+Requirements
+--------------
+
+To run the sample server make sure you have following dependencies installed:
+
+1. [Node.js](http://nodejs.org)
+2. [Socket.io](http://socket.io)
+
+
+Screenshots
+--------------
+
+In this screenshot, you can see the sample server and dashboard running with multiple clients receiving data in real-time.
+
+![Image](/datasources/plugin_nodejs_sample/plugin_node_sample_example.png)
+
+License
+----
+
+MIT