adds haddock documentation for transformPromptSelection
adds haddock documentation for transformPromptSelection

also renames the function per mailing list recommendation

darcs-hash:20090102190954-3ec9f-cbba65194ed36b0dd615a05104f5d6e0a4564605

yzhou61/xmonad-contrib,yzhou61/xmonad-contrib,yzhou61/xmonad-contrib