New image for download page of xbian.org

[NitSuA]

Hi @CurlyMo (of @IriDium), thnx for making the image. Can you also do the following:

- Host the file on sourceforge
- Replace the download link on Xbian.org
- Integrate the image in the installer (found on xbian.org)
- Host the new installer on sourceforge as well

?

Because when we have addressed the above, then we really make some progress for our new joiners ;-)