[gtkdatabox] projects which use gtkdatabox

[Matt Flax <flatmax flatmax org>]

Hi there,

If you have a project which uses gtkdatabox, there is now a page to 
place it on :

https://sourceforge.net/p/gtkdatabox/wiki/Projects%20which%20use%20Gtkdatabox/

I think it is a good idea to get these projects linked in some way ... 
this is a start.

Matt