add travis

Author: ironholds

.Rbuildignore

@@ -1,4 +1,5 @@
 ^.*\.Rproj$
 ^\.Rproj\.user$
 ^CONDUCT\.md$
-presentations/*
+presentations/*
+.travis.yml

.travis.yml

@@ -0,0 +1,18 @@
+# Sample .travis.yml for R projects
+
+language: r
+warnings_are_errors: false
+sudo: required
+
+env:
+ global:
+   - CRAN: http://cran.rstudio.com
+
+r_packages:
+   - testthat
+   - knitr
+   - Rcpp
+   - triebeard
+notifications:
+  email:
+    on_failure: change