looking for some one to edit over store locator android app


hi i got store finder android app
from here http://codecanyon.net/item/store-finder-full-android-application-v115/8747818
and i need to add subcategories i tried to contact the real authoer but looks like he is not responding for a week now
any one can do this ?
i did changes to the code and redesigned it so you will need to work on my updated version