From f6fb24a658bcaf14dd6bb765a881095ace6a8ba8 Mon Sep 17 00:00:00 2001
From: Gustavo Paterno <paternogbc@gmail.com>
Date: Sat, 2 Sep 2017 15:16:02 +1000
Subject: [PATCH] Update .travis.yml

---
 .travis.yml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index c1561a8..0d080c4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,8 @@ before_install:
   - Rscript -e 'install.packages("munsell", repos = "http://cran.rstudio.com")'
   - Rscript -e 'install.packages("scales", repos = "http://cran.rstudio.com")'
   - Rscript -e 'install.packages("ggplot2", repos = "http://cran.rstudio.com")'
+  - Rscript -e 'install.packages("knitr", repos = "http://cran.rstudio.com")'
+
 env:
  global:
    - CRAN: http://cran.rstudio.com