Before the first time you release, you need to login to NPM with:
npm login
Then, every new release can be done automatically with the release script, e.g. to release a version 0.7.2:
./release 0.7.2
or to just increment the minor version, e.g. from the current 0.7.1 to 0.7.2 you could can omit the version argument:
That script does the following actions, aborting immediately if any of them fails:
  • runs the tests
  • publishes this documentation
  • updates version in package.json
  • creates a release commit and a git tag for it
  • pushes the source code
  • publishes the NPM package