My project is accepted in sourceforge.net and I have a stable version released today in sourceforge.
The link for the project is :
<a class="aligncenter" href="https://sourceforge.net/projects/gnomedesktopwal/" target="_blank">Gnome Desktop Wallpaper changer
This is a simple command line application to change the desktop wallpaper in gnome. This version has the capability to recurse directories and put the images in the directory as wallpaper. <a name="more">