install-system-wide in rvm-1.0.13

- old
+ new

@@ -89,11 +89,11 @@
     --debug)
       rvm_trace_flag=1
       set -o verbose
       ;;
     --version|--revision)
-      if [[ -n "${1:-""}" ]] ; then
-        revision="$1"
+      if [[ -n "${2:-""}" ]] ; then
+        revision="$2"
         shift
       else
         usage
         exit 1
       fi