[FR] du option to show .files/.folders

[Yurii Kolesnykov]

By default du doesn't show disk usage of hidden files/folders. 

There is a workaround for this as answered in this question http://askubuntu.com/questions/356902/why-doesnt-this-show-the-hidden-files-folders

But this command is so weird, so I can manage to remember it. So I created alias, but while I do so I thought that it will be good to have such option, for example '--all-flle-names'.