Added -h/--help and fixed a typo

README.md

@@ -1,3 +1,3 @@
 # March
 
-A small script to automate my archlinux configuration
+A small script to automate my archlinux configuration.

install.sh

@@ -1,5 +1,4 @@
 #!/bin/bash
-
 set -o errexit -o pipefail -o noclobber -o nounset
 
 ! getopt --test > /dev/null
@@ -8,8 +7,8 @@ if [[ ${PIPESTATUS[0]} -ne 4 ]]; then
     exit 1
 fi
 
-OPTIONS=dtlhus
-LONGOPTS=device,timezone,locale,hostname,username,sudogrp
+OPTIONS=dtlhush
+LONGOPTS=device,timezone,locale,hostname,username,sudogrp,help
 
 ! PARSED=$(getopt --options=$OPTIONS --longoptions=$LONGOPTS --name "$0" -- "$@")
 if [[ ${PIPESTATUS[0]} -ne 0 ]]; then
@@ -52,9 +51,25 @@ while true; do
             sudogrp="$2"
             shift 2
             ;;
+        -h|--help)
+            description=$(< tail -n +3 $CWD/README.md)
+            echo "
+Usage: ./install.sh -d [DEVICE] -t [/usr/share/zoneinfo/REGION/CITY] -l [LOCALE] -h [HOSTNAME] -u [USER] -s [SUDO]
+
+Mandatory arguments:
+-d | --device       Device that shoud be partitioned e.g. "/dev/sda"
+-t | --timezone     Your timezone according to /usr/share/zoneinfo/ e.g. "/usr/share/zoneinfo/EUROPE/Berlin"
+-l | --locale       Your locale according to /etc/locale.gen e.g. "en_US.UTF-8 UTF-8"
+-h | --hostname     Name for your machine e.g. "ArchLinux"
+-u | --username     Your username e.g. "foo"
+-s | --sudogrp      Name of the sudogrp
+-h | --help         This ehre.
+            "
+            exit 0
+            ;;
         *)
             echo "Programming error"
-            exit3
+            exit 3
             ;;
         esac
     done