Google Code-in

There are some image files that KHangMan uses as icons. Currently the png and QML files are all under one common folder. It would be nice to have a separate folder for the image files, thus separating them from QML code.

The aim of the task will be to relocate the image files to a different directory (say "images" or something), and then make appropriate changes in the code, so that their updated paths are used.