npm version + git flow

$ git flow init

.git/config

[branch "master"]
    remote = origin
    merge = refs/heads/master
[branch "develop"]
        remote = origin
        merge = refs/heads/develop
[gitflow "branch"]
    master = master
    develop = develop
[gitflow "prefix"]
    feature = feature/
    release = release/
    hotfix = hotfix/
    support = support/
    versiontag = 

Order

1. Run the preversion script.
2. Bump version in package.json as requested (patch, minor, major, etc).
3. Run the version script.
4. Commit and tag.
5. Run the postversion script.