Installing SimpleMessageSystem

For some reason I cannot find the {aruino-0022\lib\targets\libraries\ path for installing the SimpleMessageSystem folder. It does not seem to exist. Is there some other way to use the SimpleMessageSystem example in a way where Arduino will refer to the SimpleMessageSystem.h library?
Or does someone know how I might locate the libraries folder on a Mac. I've already tried searching.

put it in arduino-0022/libraries

It does not exist on my computer. There is not an arduino folder

Found it. I could only access the libraries folder by opening the arduino software, going to the sketch menu and Show Sketch Folder.