R Package Development 3: Travis/Appveyor and Continuous Integration

This video is the third in a series on R package development in in RStudio. Here we will discuss continuous integration services Travis CI (https://travis-ci.com/) and Appveyor (https://www.appveyor.com/) for testing your packages on other machines. The usethis package will be used heavily, and I recommend checking it out: https://github.com/r-lib/usethis. Also the covr package will be used for code coverage: https://github.com/r-lib/covr