Shoes is a class not a module

* Done for backwards compatibility of the URL system
* This really is subject to change back in future version
  at least I think so :-)
* this is for #263
* worthy to note that the change seemed relatively easy
  (took me a bit more than on pomodoro)
* also adjusted samples
Merge pull request #302 from PragTob/ShoesIsAClass

Shoes is a class not a module
Revised Shoes::Download a little bit. Now expert-definr-adjusted.rb works.
Merge branch 'master' into fi/display_underlines
Remove duplicated line with renamed variable