This will prevent AppVeyor from running a job, when commits are done regarding the
docs directory only. It might be useful, when the projects repository contains the GitHub pages in the master branch and changes to them are not critical to the build.
skip_commits: files: - docs/**/*
I further exclude some other files too. This is my minimal list
skip_commits: files: - .gitignore - .gitattributes - .travis.yml - docs/**/* - README.md # if not already in moved to the docs folder