Note about CircleCI

1. First times when add project to CircleCI,
   • Commit code to Github with all config CircleCI .circleci/config.yml
   • Enter CircleCI,

     Add Projects -> Set Up Project -> Start Building 
     
     -> Add Manually -> Start Building
     

   • CircleCI will auto first build from source code on Github.
2. If you setting CircleCI only run in once branch, you still must has .circleci/config.yml at every branches. And when, CircleCI will only trigger branch follow config.

workflows:
  version: 2
  build:
    jobs:
      - build:
          filters:
            branches:
              only:
                - develop