You are right, in the comments section most say they cant install it.
Gnome-shell is under heavy development. You can see its all(extensions) Beta. KDE 4.x was under development for over 8 years before becoming usable this year and winning all old users like myself back.
Gnome 3.x(gnome-shell) has come a long way when it was introduced back in 2011. In 2 years it has catapulted to great heights. Im most impressed by the gnome devs. From a naysayer, i firmly stand by them today.
The extensions are all mostly beta, which makes sense since it will be another 2 years since gnome becomes formally stable irrespective of any major internal changes. It already is usable. Most extensions are written by users like you/me and commiters. Likewise you may have noticed gnome 3.6 is not gnome 3.8. They are both different. Sort of like ironman building a replacement for his palladium reactor. Highly modularized and being continuously revised.
Unity went through the same phase and much later unity-tweak-tool got released which was a storm killer. No more tsunamis or shocks coming from Unity.
Tools will be built, automation will take centrestage when the modular structure of gnome becomes highly stable. Till then take a look around, sit back and watch or try building an extension....
https://wiki.gnome.org/GnomeShell/Extensionshttps://wiki.gnome.org/GnomeShell/Exten ... epTutorial (step by step tutorial---you already know js!)
http://www.gnome.org/get-involved/ (getting involved)
https://developer.gnome.org/ (the gnome architecture
illustrated... Note: libnotify is the notification handler; when you insert a device a popup occurs saying device is connected and other stuff etc etc.)
https://developer.gnome.org/gnome-devel-demos/unstable/ --
(choose your programming language and learn to program with sample code, tutorials and demos .)