Do not waste -h for usage

bin/saturnin-push

 
 while true; do case $1 in
     -o|--order)     ORDER=$2;           shift 2;    ;;
-    -h|--help)      usage;                          ;;
+    --help)         usage;                          ;;
     "")             break                           ;;
     -*)             usage;                          ;;
     *)              hosts="$1"; shift;              ;;