Update README.md

Added comment to waterfall example

1 files changed, 1 insertions, 0 deletions

diff --git a/README.md b/README.md
index 31cfbab..a20f068 100644
--- a/README.md
+++ b/README.md
@@ -824,6 +824,7 @@ async.waterfall([
         callback(null, 'one', 'two');
     },
     function(arg1, arg2, callback){
+    	// arg1 now equals 'one' and arg2 now equals 'two'
         callback(null, 'three');
     },
     function(arg1, callback){