update README

diff --git a/README.md b/README.md
index 0de4bbdb417e1ee87876adbca5bbca86532d3c8e..d123e0c77fdd91d973e683e3f73dd35ccdf1707b 100644 (file)
--- a/README.md
+++ b/README.md
@@ -45,6 +45,8 @@ To build the TAGS file, type:
     make TAGS
 ```
 
+This assumes that ```hasktags``` has been installed.
+
 Usage
 -----