From 4b535583940f6e93f0bda3e0407b43a36c4f74c6 Mon Sep 17 00:00:00 2001
From: ben <types@ccs.neu.edu>
Date: Tue, 8 Sep 2015 14:24:08 -0400
Subject: [PATCH] ** note required compiler

---
 README.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README.md b/README.md
index 4eb4748..f1887e7 100644
--- a/README.md
+++ b/README.md
@@ -30,3 +30,7 @@ Also see `spreadsheet.mli`
 - `write : filename:string -> t -> unit` write a spreadsheet to a file
 
 
+Note
+----
+
+Requires OCaml 4.02.0 for the [Set.of_list](http://caml.inria.fr/pub/docs/manual-ocaml/libref/Set.S.html) function.