Add dynamic node api

Closes #322
- nodes modules can be installed/removed dynamically at runtime
- nodes can be enabled/disabled
- onpaletteadd/onpaletteremove api added to node definitions
- initial implementation of nr-cli

red/red.js

@@ -21,7 +21,7 @@ var comms = require("./comms");
 var log = require("./log");
 var util = require("./util");
 var fs = require("fs");
-var settings = null;
+var settings = require("./settings");
 var credentials = require("./nodes/credentials");
 
 var path = require('path');
@@ -33,9 +33,8 @@ var events = require("events");
 var RED = {
 
     init: function(httpServer,userSettings) {
-        settings = userSettings;
-        settings.version = this.version();
-
+        userSettings.version = this.version();
+        settings.init(userSettings);
         server.init(httpServer,settings);
         library.init();
         return server.app;
@@ -49,6 +48,7 @@ var RED = {
     events: events,
     log: log,
     comms: comms,
+    settings:settings,
     util: util,
     version: function () {
         var p = require(path.join(process.env.NODE_RED_HOME,"package.json"));
@@ -64,6 +64,5 @@ RED.__defineGetter__("app", function() { console.log("Deprecated use of RED.app
 RED.__defineGetter__("httpAdmin", function() { return server.app });
 RED.__defineGetter__("httpNode", function() { return server.nodeApp });
 RED.__defineGetter__("server", function() { return server.server });
-RED.__defineGetter__("settings", function() { return settings });
 
 module.exports = RED;