diff --git a/README b/README
index 7536ee7..4391380 100644
--- a/README
+++ b/README
@@ -52,5 +52,7 @@ generated go file.
  You can now simply include the new .go file in your program and call
  gophercolor_png() to get the uncompressed image data.
 
+ See the testdata directory for example input and output.
+
  Invoke the program with the -h flag for more options.