[recipes] Update OS X build instructions

[Matthias Clasen <matthiasc src gnome org>]

commit 7df7d1add71ea5aa9010f40983950391be30c256
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Jan 2 06:18:43 2017 -0500

    Update OS X build instructions
    
    It is even easier now.

 README.md |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/README.md b/README.md
index 54e60d5..5ee2536 100644
--- a/README.md
+++ b/README.md
@@ -79,6 +79,8 @@ cd recipes
 ./autogen --disable-autoar
 make
 ```
+To build a released version of recipes on OS X, just
 
-This pull request https://github.com/Homebrew/homebrew-core/pull/8303 adds a formula for building
-recipes from a tarball release.
+```
+brew install recipes
+```