use travis for this repo

.Rbuildignore

@@ -1,3 +1,3 @@
 ^.*\.Rproj$
 ^\.Rproj\.user$
-^shippable
+^\.travis\.yml$

.travis.yml

@@ -0,0 +1,28 @@
+# it is not really python, but there is no R support on Travis CI yet
+language: python
+
+# environment variables
+env:
+  - R_PKG="$(basename $TRAVIS_REPO_SLUG)"
+
+# install dependencies
+install:
+  - sudo apt-add-repository -y "deb http://cran.rstudio.com/bin/linux/ubuntu `lsb_release -cs`/"
+  - sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E084DAB9
+  - sudo apt-add-repository -y ppa:marutter/c2d4u
+  - sudo apt-get update -qq
+  - sudo apt-get install -qq r-base-dev r-cran-knitr
+  - "wget -q -O - http://yihui.name/xran/r-config | bash"
+  - Rscript -e "install.packages('$R_PKG', dep = TRUE')"
+
+# run tests
+script:
+  - cd ..; rm -f *.tar.gz; R CMD build $R_PKG
+  - R CMD check ${R_PKG}_*.tar.gz --no-manual
+
+# deploy to XRAN
+after_success:
+  - "(wget -q -O - http://yihui.name/xran/r-xran | bash)"
+
+after_failure:
+  - cd ..; for i in `ls *.Rcheck/00*`; do cat $i; done

README.md

@@ -1,5 +1,7 @@
 # printr
 
+[![Build Status](https://travis-ci.org/yihui/printr.svg)](https://travis-ci.org/yihui/printr)
+
 This is a companion package to [**knitr**](http://yihui.name/knitr). Its main
 purpose is to extend the S3 generic function `knit_print()` in **knitr**, which
 is the default value of the chunk option `render`, as explained in the vignette