add config functionality

index.coffee

@@ -1,9 +1,16 @@
+fs = require "fs"
 express = require "express"
 app = express()
 expressWs = require("express-ws")(app)
-port = 3000
 sockets = []
 
+try
+        config = require("./config.js")
+catch error
+        console.log "cannot find config, auto-creating"
+        sampleConfig = "var config = {};\nconfig.port = 3000;\nmodule.exports = config;\n"
+        fs.writeFileSync "./config.js", sampleConfig
+        config = {port: 3000}
 # the counter itself
 counter = 0
 
@@ -32,5 +39,5 @@ app.ws "/api", (ws, req) ->
                 broadcastCounter() if not errored
         ws.on "close", -> removeElement sockets, ws
         
-app.listen port, () ->
-        console.log("ready on port " + port)
+app.listen config.port, () ->
+        console.log("ready on port " + config.port)