Rewrite README.source to emphasize that control.in file is *not* a show-stopper for contributions, and refer to wiki page for details.
Rewrite README.source to emphasize that control.in file is *not* a show-stopper for contributions, and refer to wiki page for details.

tchx84/debian-pkg-sugar-artwork,tchx84/debian-pkg-sugar-artwork,tchx84/debian-pkg-sugar-artwork