[Vala] VAPI tutorial

[rastersoft <raster rastersoft com>]

Hi all:

I wrote a little VAPI writing tutorial to help people to start writing 
VAPI files for libraries. I put it at

https://wiki.gnome.org/Projects/Vala/WrittingVAPIs

Of course it is incomplete, and is possible that it has mistakes, so I 
accept all kind of suggestions and fixes.

--
Nos leemos
                         RASTER    (Linux user #228804)
raster rastersoft com              http://www.rastersoft.com