In order to be able to set up continuous integration with Travis, first of all you have to connect your Travis account with your GitHub account. Open https://travis-ci.org/ and click on the Sign in with GitHub button:

Click on the Sign in with GitHub button

Now you can add repositories that will be tracked with Travis. Click on the plus sign (+):

Click on the plus sign to add your GitHub project

After you click on the plus button, the whole list of your GitHub project appears. Choose the projects you want to track:

Choose the projects you want to track with Travis

Now that we have our projects connected to the Travis build system that listens to every commit and push to the master branch, we need to tell it somehow what it has to do once it detects changes. All the configuration for Travis should be stored in the .travis.yml file. Add the .travis.yml file to both the projects. We have at least to tell which node version should be used. Check the...