Travis CI is a hosted service for continuous integration. It is very tightly coupled to GitHub (which is why you will need a Git repository on GitHub to actually use Travis CI). It is free to use for open source projects, which, together with its good GitHub integration, makes it the go-to choice for many popular projects. For building private GitHub projects, there is a paid usage model.
The configuration of your Travis build is done by a .travis.yml file that needs to be present at the root level of your repository. Basically, this file can look like this:
language: go go: - 1.6 - 1.7 - 1.8 - 1.9 env: - CGO_ENABLED=0 install: true script: - go build
The language property describes which programming language your project is written in. Depending on whichever language you provide here, you will have different tools available in your build environment. The go property describes for which versions of Go your application should be built. Testing your code...