Try to fit triangle-boy into xxx-pluggable-transport
We should review the pluggable transport spec to ensure it is robust enough to handle involved designs such as the triangle boy transport: http://www.webrant.com/safeweb_site/html/www/tboy_whitepaper.html
Someone should probably also make sure a skype transport is possible, but this review is only about triangle-boy. We can do a skype design after this.