Linking the emulators/mame4all/roms directory to roms/mame4all as
without doing so all ROMs were failing to load with
"ERROR: The required files are missing, the game cannot be run'"

Not sure if this is the best way to tackle it, but it works for me.
I must have been tired when I thought of linking like that.
Merge pull request #3 from auraltension/master

Linking the emulators/mame4all/roms directory to roms/mame4all