CI：gitlab + gitlab-ci + slack

最近在熟悉gitlab + gitlab-ci + slack，实现可持续集成，对开发流程实现自动化。

1. Ubuntu 16.04搭建GitLab服务器
参考：https://www.linuxidc.com/Linux/2018-01/150319.htm

2. This job is stuck, because the project doesn‘t have any runners online assigned to it. Go to Runners page
参考：https://stackoverflow.com/questions/53370840/this-job-is-stuck-because-the-project-doesnt-have-any-runners-online-assigned

3. 使用GitLab CI 持续集成
参考：http://www.fridayhaohao.com/articles/28/  注册runner，code .gitlab-ci.yml,使gitlab OK

4.生成Badges徽章 
参考：https://about.gitlab.com/2016/11/03/publish-code-coverage-report-with-gitlab-pages/