AUR helpers assist those using Arch Linux to install unsupported software using user created install scripts. This is one of the many.
Features (i.e., why it isn't small anymore)
Prerequisites: sudo pacman --needed -S base-devel jshon expac
Spinach: curl -Lo s floft.net/s;less s;read;bash s -i spinach;rm s
Search: spinach -s package
Print info: spinach -p package
Install: spinach -i package
Upgrade: spinach -u
For more information, read see `man spinach' or `spinach -h'. For recent changes, see the change log.