In this video, I take the Contractometer project from earlier lessons and integrate it with Travis for Continuous Integration (i.e. auto-building and testing). https://travis-ci.com

What is continuous integration anyway? Essentially, you check your code into a central repository (i.e. Github) and automated building is done to see if your code can run, and tests are automatically run to see if your code passes. It should ensure that the code in the repository passes.