title: Socket.io configuration error
body: <p>I use socket.io v.1.0.3.</p>
  
  <p>and try to configure for production.</p>
  
  <pre><code>  var io = require('socket.io')(server);
  
              io.configure('production', function()
              {
                  log(" set config for production");
                  io.enable('browser client minification'); // send minified client
                  io.enable('browser client etag'); // apply etag caching logic based on version number
                  io.enable('browser client gzip'); // gzip the file
                  io.set('log level', 1); // reduce logging
                  io.set('transports', [ // enable all transports (optional if you want flashsocket)
                      'websocket', 'flashsocket', 'htmlfile', 'xhr-polling', 'jsonp-polling'
                  ]);
              });
  </code></pre>
  
  <p>An error saying socket.io instance does not have <code>configure</code></p>
  
  <pre><code>       io.configure('production', function()
                 ^
  TypeError: Object #&lt;Server&gt; has no method 'configure'
  </code></pre>
  
  <p>How?</p>
  
  <p>Thanks.</p>