How do I install this and use it?

[x11joe]

I'm new to atom and not sure where I go to install this?

[rsese]

Looks like this example package was never published so you can't install it from Settings View or through apm:

https://discuss.atom.io/t/what-happened-to-the-decoration-example-package/12241/3

You can use it with this process described in the Flight Manual:

http://flight-manual.atom.io/hacking-atom/sections/contributing-to-official-atom-packages/#hacking-on-packages

git clone https://github.com/atom/decoration-example
cd decoration-example
apm install
apm link -d
atom --dev