Gitflow.md

1. Before adding new feature or a PR is merged at remote, at main branch:

• git fetch: get updates from remote repo
• git reset --hard origin/main: sync local main to be the same as remote main; this can remove any changes at local, so should be called before adding any changes

2. To create new features:

• git checkout -b feature-name: new a branch named "feature-name"
• modify codes and commit
• (if at the same time remote main is changed due to another PR) git checkout main; git fetch; git reset --hard origin/main then git checkout feature-name; git rebase origin/main and resolve any conflicts
• git push -u origin feature-name for the first time to push a local branch to remote or simply git push if the branch already exists at remote

3. Do pull request.