[CREATE] Photoshop patterns file format

[Olivier BERTEN]

 Hi !

In order to go on with SwatchBooker's expected features, I tried to
document Photoshop's pattern file format
<http://www.selapa.net/patterns/fileformats.php>

There was already a plugin for Gimp
<http://registry.gimp.org/node/10879> but it wasn't documented.

According to Photoshop CS document format there should be also some
color block for Duotone patterns but I haven't seen any duotone pattern
yet... If you have any, please send them :-)

Olivier