Auto Delete option for Default Exchange

[dchankhour]

Currently there does not seem to be an option to create the Default Topic Exchange with an Auto Delete setting.

Currently i have made the following change under the following line of code:

https://github.com/postwait/node-amqp/blob/master/lib/connection.js#L292

if (name !== '' && options.autoDelete === undefined) options.autoDelete = false;

And updated the createConnection function to have the option:

var conn = amqp.createConnection({ url: config.rabbit.url[app.get('env')] }, { defaultExchangeName: 'AppServerWorkExchange', autoDelete: false });

Can i propose making the auto Delete as an option to be passed to the CreateConnection method.

Thanks.