Adjust help text

diff --git a/chevron/main.py b/chevron/main.py
index bbf4978bbecf5d3428fdede0df33e46642178613..2bce52b2d5f54fdab1fc0e89ac74d5a5e9b0b6b8 100755 (executable)
--- a/chevron/main.py
+++ b/chevron/main.py
@@ -79,7 +79,7 @@ def cli_main():
                         default='}}')
 
     parser.add_argument('-w', '--warn', dest='warn',
-                        help='Warn on undefined template substitutions',
+                        help='Print a warning to stderr for each undefined template key encountered',
                         action='store_true')