From 0eb252eb61b1ec21131f8b3bd4048ff5c434f921 Mon Sep 17 00:00:00 2001
From: Noah Andrews <NoahAndrews@users.noreply.github.com>
Date: Wed, 2 Mar 2016 22:16:43 -0500
Subject: Added Mac section (copy/pasted from PCB_GUIDE.md)

---
 BUILD_GUIDE.md | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/BUILD_GUIDE.md b/BUILD_GUIDE.md
index d7106d9183..07ed0e98d7 100644
--- a/BUILD_GUIDE.md
+++ b/BUILD_GUIDE.md
@@ -6,7 +6,17 @@
 What these instructions look like depends on whether NoahAndrews's setup scripts get merged
 
 ### Mac
+If you're using homebrew, you can use the following commands:
 
+    brew tap osx-cross/avr
+    brew install avr-libc
+    brew install dfu-programmer
+
+Otherwise, these instructions will work:
+
+1. Install Xcode from the App Store.
+2. Install the Command Line Tools from `Xcode->Preferences->Downloads`.
+3. Install [DFU-Programmer][dfu-prog].
 
 ### Linux
 
-- 
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