Use `os` matrix instead of explicit matrix.include
language: go
sudo: false
dist: trusty
+osx_image: xcode8.3
+go: 1.8.x
+
+os:
+- linux
+- osx
cache:
directories:
- node_modules
-go: 1.8.x
-
-matrix:
- include:
- - go: 1.8.x
- os: osx
- osx_image: xcode8.3
-
before_script:
- go get github.com/urfave/gfmrun/... || true
- go get golang.org/x/tools/cmd/goimports
