FEATURE REQUEST: Console command for Swiftmailer to check configuration

[verschoof]

I found out that when I deploy my application for the first time on production that the settings for the SMTP are incorrect, the way I have to find it out is to run a controller that mails.
Now I was thinking that it would be handy if there will be a console command for swiftmailer that checks if the settings are correct and sends a test mail.

What do you guys thinking about that?

[shouze]

@verschoof take a look at #34 & its Debug command ;)

[jeremyFreeAgent]

@verschoof I've added a command for that indeed.