Gitlab build pipeline
Adding the new gitlab-ci.yml file so the build pipeline is moved from travis to gitlab.
See for example http://gitlab.crown.tech/crown/crown-core/pipelines/78/builds for the result.
Also added the new 'badge' in the README.md.
Adding the new gitlab-ci.yml file so the build pipeline is moved from travis to gitlab.
See for example http://gitlab.crown.tech/crown/crown-core/pipelines/78/builds for the result.
Also added the new 'badge' in the README.md.