[KPhotoAlbum] Build instructions have been updated

[Johannes Zarl-Zierl]

On Freitag, 9. Dezember 2016 21:27:53 CET Johannes Zarl-Zierl wrote:
> Hi,
> 
> I've updated the build instructions for KPhotoAlbum:
> 
> https://userbase.kde.org/Building_KPhotoAlbum
> 
> The new instructions should work for KDE Frameworks (kphotoalbum 5.x). If
> you notice any problems, please respond here...

Based on the feedback so far, I've tried to improve the wording and 
structure...