From 373f0e9c3d89606909b32381fe7a483d46964884 Mon Sep 17 00:00:00 2001
From: John Whitington <john@coherentgraphics.co.uk>
Date: Tue, 12 May 2015 15:13:07 +0100
Subject: [PATCH] Added instruction to pick a tag when downloading from Github

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

diff --git a/README.md b/README.md
index ff06ba4..e937666 100644
--- a/README.md
+++ b/README.md
@@ -39,6 +39,10 @@ opam install camlpdf
 To build
 --------
 
+If downloading from Github, obtain the correct source. This means choosing the tag for a
+particaular version, such as "v2.1.1". The head of the master branch is
+unstable.
+
 1. Type `make` to make the cpdf executable and the library
 
 2. Type `make install` to install the OCaml cpdf library.