I use travis-ci to test my node.js application. Because the application need users login with Access Key and Secret Key to test, I need to specify these two keys in travis-ci\'s
Read here (Using Environment Variables with Travis-CI!) --> https://github.com/dwyl/learn-environment-variables#using-environment-variables-with-travis-ci-
Also, to learn more about Travis, read here (Learn Travis) --> https://github.com/dwyl/learn-travis