From 2c4d23e189b03154f4db3175434f9658254fe90d Mon Sep 17 00:00:00 2001
From: hadley <h.wickham@gmail.com>
Date: Wed, 9 Mar 2016 07:49:59 -0600
Subject: [PATCH] Cache book directory

---
 .travis.yml | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index aceb921..5b8df6b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,8 +2,7 @@ language: R
 cache:
   packages: true
   directories:
-  - *_cache
-  - *_files
+  - _book
 
 addons:
   apt: