Improved encrypted paper backup guide

how-to-create-encrypted-paper-backup/qr-clone.sh

@@ -2,6 +2,27 @@
 
 set -e
 
+positional=()
+while [[ $# -gt 0 ]]; do
+  argument="$1"
+  case $argument in
+    -h|--help)
+    printf "%s\n" \
+    "Usage: qr-clone.sh [options]" \
+    "" \
+    "Options:" \
+    "  -h, --help   display help for command"
+    exit 0
+    ;;
+    *)
+    positional+=("$1")
+    shift
+    ;;
+  esac
+done
+
+set -- "${positional[@]}"
+
 tput reset
 
 printf "%s\n" "Restoring…"