Bugfix: file/directory mismatch

install expects that when installing a file, the target be a file, unlike cp.
Removed cron entry

Packages shouldn't carry out configuration - that is up to the user.
While defaults are acceptable, this is not a default, it's just a common preset.
Cleanup: Default config

Cleaned up default config comments, alignment and delimiters.
Killed script on errors

Since the script is A) inexpensive to run, B) supposed to run as a cronjob and
C) will make fatal errors if it continues to run, terminate the script at any
error.
Updated PKGBUILD to use makepkg's VCS support