changed env var name, added readme note

Author: noygal

README.md

@@ -75,6 +75,7 @@ See instructions for preferred server linux-dash server _(all included)_:
 npm install --production
 
 ## start linux-dash (on port 80 by default; may require sudo)
+## You may change this with the `LINUX_DASH_SERVER_PORT` environment variable (eg. `LINUX_DASH_SERVER_PORT=8080 node server`)
 node index.js
 
 ```

app/server/index.js

@@ -5,9 +5,11 @@ var path    = require('path')
 var spawn   = require('child_process').spawn
 var fs      = require('fs')
 var ws      = require('websocket').server
+var port    = process.env.LINUX_DASH_SERVER_PORT || 80
 
-server.listen(process.env.PORT || 80)
-console.log('Linux Dash Server Started!')
+server.listen(port, function() {
+  console.log('Linux Dash Server Started on port ' + port + '!');
+})
 
 app.use(express.static(path.resolve(__dirname + '/../')))