diff --git a/README.txt b/README.txt
index b775c6d..801d3b6 100644
--- a/README.txt
+++ b/README.txt
@@ -5,3 +5,5 @@ This a vim plugin for krl (Kynex Rule Language) vim support. It includes:
 For installation, we recommend pathogen by Tim Pope (https://github.com/tpope/vim-pathogen). Just clone this repo into your bundle directory. If you aren't using pathogen, then you can install the plugin the old-school way by copying the directories into your .vim directory.
 
 I also recommend the PastelsOnDark theme that has KRL specific highlighting at: https://github.com/mikefarmer/pastelsondark-vim
+
+NOTE: In order to use VIM with KRL, you will need to install the KRL Commandline Tool.  Instructions for installing and using it are here: http://docs.kynetx.com/docs/Command-line_Ruby_Gem