io configure - socket io v1.X

What is the example configuration for do this in socket io v1.X.X ?

//this is configuration for socket.io v0.9.X<
io.configure('production', function () {
        io.enable('browser client minification');
        io.enable('browser client etag');
        io.enable('browser client gzip');
        io.set('log level', 1);
        io.set('transports', ['websocket', 'flashsocket', 'htmlfile', 'xhr-polling', 'jsonp-polling']);
    });

[dstroot]

This DOES NOT work (wish I knew what did!):

var app         = module.exports = express(); 
var server      = require('http').createServer(app);
var io          = require('socket.io')(server, {
  'browser client minification': true,  // Send minified client
  'browser client etag': true,          // Apply etag caching logic based on version number
  'browser client gzip': true,          // Gzip the file
  'browser client expires': true        // Adds Cache-Control: private, x-gzip-ok="", max-age=31536000 header
});

[rauchg]

But adding a note about it in the guide sounds like a great idea.