Fixed gluerecords script

bin/gluerecords

@@ -33,7 +33,13 @@ check_gluerecords() {
   echo -ne "* Glue records are correct!\n\n"
 }
 
-DOMAIN_NEW="federated.sh"
+usage() {
+  echo "$0: <domain.com>"
+  exit 2
+}
+
+[ $# != 1 ] && usage
+DOMAIN_NEW=$1
 EXTERNALIP=`dig @resolver4.opendns.com myip.opendns.com +short 2> /dev/null`
 [ $? -ne 0 ] && failcheck "Couldn't run dig, dns is not working"
 check_gluerecords