add Travis config

Author: nuest

.Rbuildignore

@@ -1,3 +1,5 @@
 ^.*\.Rproj$
 ^\.Rproj\.user$
 ^README\.Rmd$
+^\.httr-oauth$
+^\.travis\.yml$

.travis.yml

@@ -0,0 +1,11 @@
+# R for travis: see documentation at https://docs.travis-ci.com/user/languages/r
+
+language: R
+cache: packages
+
+r:
+  - oldrel
+  - release
+  - devel
+
+warnings_are_errors: true

NEWS.md

@@ -0,0 +1,4 @@
+# codecheck 0.0.0.90xx
+
+* Added tests using `tinytest`
+* Added a `NEWS.md` file to track changes to the package.

README.Rmd

@@ -17,6 +17,7 @@ knitr::opts_chunk$set(
 
 <!-- badges: start -->
 [![Lifecycle: experimental](https://img.shields.io/badge/lifecycle-experimental-orange.svg)](https://www.tidyverse.org/lifecycle/#experimental)
+[![Travis build status](https://travis-ci.com/nuest/codecheck.svg?branch=master)](https://travis-ci.com/nuest/codecheck)
 <!-- badges: end -->
 
 `codecheck` is an assistant for conducting CODECHECKs, written in the R language and distributed as an R package.

README.md

@@ -7,6 +7,8 @@
 
 [![Lifecycle:
 experimental](https://img.shields.io/badge/lifecycle-experimental-orange.svg)](https://www.tidyverse.org/lifecycle/#experimental)
+[![Travis build
+status](https://travis-ci.com/nuest/codecheck.svg?branch=master)](https://travis-ci.com/nuest/codecheck)
 <!-- badges: end -->
 
 `codecheck` is an assistant for conducting CODECHECKs, written in the R