fix: Fix flag ordering in set calls in scripts (#99)

The README for scripts has an incorrect use of the `set`. Where it says
to use:

	set -oue pipefail

it should be:

	set -euo pipefail

since `pipefail` is an option consumed by `set -o`.

More information: https://www.gnu.org/software/bash/manual/html_node/The-Set-Builtin.html

modules/files/files.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
 # Tell build process to exit if there are any errors.
-set -oue pipefail
+set -euo pipefail
 
 get_yaml_array FILES '.files[]' "$1"