From 218b92b88366f3ac29c48229c56b20c8fbbe1367 Mon Sep 17 00:00:00 2001
From: Tom MacWright <tom@macwright.org>
Date: Mon, 27 Jan 2014 12:58:27 -0500
Subject: [PATCH] Improve readme

---
 README.md | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 58779708f..e6a573456 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,16 @@
-
+An OpenGL renderer for [Mapbox vector tiles](https://www.mapbox.com/blog/vector-tiles),
+implemented in C++, targeting iOS & OSX.
 
 # Build instructions
 
 ## Mac OS X
 
+You may need to install [glfw3](http://www.glfw.org/docs/latest/):
+
+```
+brew install homebrew/versions/glfw3
+```
+
 ```
 mkdir xcode
 cd xcode
@@ -13,7 +20,6 @@ cmake .. -G Xcode
 Then open the xcode project and build.
 
 
-
 # Style protobuf
 
 We're encoding the styling information as a protocol buffer, according to