npm install livereload-server

var fs   = require('fs');
var Path = require('path');
var LRWebSocketServer = require('livereload-server');

// id, name, version identifies your app;
// protocols specifies the versions of subprotocols you support
var server = new LRWebSocketServer({ id: "com.example.acme", name: "Acme", version: "1.0", protocols: { monitoring: 7, saving: 1 } });

server.on('connected', function(connection) {
  console.log("Client connected (%s)", connection.id);
});

server.on('disconnected', function(connection) {
  console.log("Client disconnected (%s)", connection.id);
});

server.on('command', function(connection, message) {
  console.log("Received command %s: %j", message.command, message);
});

server.on('error', function(err, connection) {
  console.log("Error (%s): %s", connection.id, err.message);
});

server.on('livereload.js', function(request, response) {
  console.log("Serving livereload.js.");
  fs.readFile(Path.join(__dirname, 'res/livereload.js'), 'utf8', function(err, data) {
    if (err) throw err;

    response.writeHead(200, {'Content-Length': data.length, 'Content-Type': 'text/javascript'});
    response.end(data);
  });
});

server.on('httprequest', function(url, request, response) {
  response.writeHead(404);
  response.end()
});

server.listen(function(err) {
    if (err) {
        console.error("Listening failed: %s", err.message);
        return;
    }
    console.log("Listening on port %d.", server.port);
});