Added note about STL
diff --git a/mac/README.txt b/mac/README.txt
index e1be78b..8981817 100644
--- a/mac/README.txt
+++ b/mac/README.txt
@@ -2,7 +2,7 @@ FTGL Version 1.0
This project will build a static library (archive) in this directory.
-FTGL requires the Freetype2 library (version 2.0.3 or later) and OpenGL (glu version 1.2 or later). You may need to edit the paths to point to the correct place.
+FTGL requires the Freetype2 library (version 2.0.3 or later) and OpenGL (glu version 1.2 or later). You may need to edit the paths to point to the correct place. It also uses STL containers.
To use FTGL in your own projects you will need to link against this lib and include the FTGL headers located in the src directory. Your project will also need Freetype and OpenGL.