add link to AUR package

README.md

@@ -4,3 +4,7 @@ These are used for Arch Linux's pacman, so that snapper automatically takes a
 pre and post snapshot before and after pacman transactions. There's no need to
 create aliases, etc. See `man alpm-hooks` and `man snapper` for more
 information.
+
+## Installation
+
+Install [the package from the AUR](https://aur.archlinux.org/packages/snap-pac/).

snapper-pac-post

@@ -1,10 +0,0 @@
-#!/bin/bash
-
-PREFILE=/etc/snapper/.snap-pac-pre
-if [ -f $PREFILE ]; then
-    SNAPPERPACPRE=$(cat $PREFILE)
-    snapper --config root create --type post --pre-number $SNAPPERPACPRE --description "pacman posttransaction"
-    rm $PREFILE
-else
-    echo "WARNING: $PREFILE does not exist, so not performing post snapshot. If you are initially installing snap-pac, this is normal."
-fi