how to get custom maps on left 4 dead/left 4 dead 2 on mac

to get to library, go into finder and press command (shift g and type in ~/library) then click go
go to this website l4dmaps.com/
download whatever map you want...wait for the download to start, when its finished go in to finder and find it.
when you find it drag it in to the library folder.
go into library, find it drag it into the application support folder.
go into application support, find it and drag it in to the steam folder.
then drag it into the steam apps folder. then drag it into the common folder.
then drag it into the left 4 dead 2 folder. then drag it into the folder that say left4dead2(make sure you drag in to the one that has no spaces) once your in there then drag it into the addons folder. and then you are done and ready to play it
note: it is the same for left 4 dead 1