machine:
  environment:
    GODIST: "go1.7.linux-amd64.tar.gz"
    IMPORT_PATH: "github.com/$CIRCLE_PROJECT_USERNAME/$CIRCLE_PROJECT_REPONAME"
  post:
    - mkdir -p download
    - test -e download/$GODIST || curl -o download/$GODIST https://storage.googleapis.com/golang/$GODIST
    - sudo rm -rf /usr/local/go
    - sudo tar -C /usr/local -xzf download/$GODIST

Use golang 1.7 for CI
Use golang 1.7 for CI
