Install knitr and rmarkdown.

Author: jolars

.travis.yml

@@ -9,7 +9,7 @@ before_install:
   - ./run.sh bootstrap
 
 install:
-  - ./run.sh install_aptget  r-cran-rcpp r-cran-bh r-cran-runit
+  - ./run.sh install_aptget  r-cran-rcpp r-cran-bh r-cran-runit r-cran-knitr r-cran-rmarkdown
 
 script:
   - ./run.sh run_tests