тест
Поменял шрифт, сделал неразваливающийся каркас, добавил небольшое описание, добавил qr код.
Merge remote-tracking branch 'github/presentation'
Deleted old presentation from public
Moved presentation from public to MainController (app/views/main/). Changed application.css.erb to NOT handle all css in stylesheets folder because we have STRONGLY DIFFERENT presentation layout.