code: function(err){
  			if(!err){
  				var address = app[serverNS].address();
  
  				if(config.port){
  					app.info('Server online at %s:%s', address.address, address.port);
  				}else if(config.file){
  					app.info('Server online via %s', config.file);
  				}else{
  					app.info('Server online!');
  				}
  			}
  			app.emit('app.register', 'express');
  			return callback(err);
  		}
docs: register express with spawnpoint