message: docs(RELEASE): Also update the release branch
diff: @@ -20,6 +20,9 @@ git commit -m "feat(version): Bump NPM version to ${version}"
  cp LICENSE README.md package.json dist/
  cd dist
  npm publish
  +cd ..
  git tag -m "itk.js ${version}" -s v$version HEAD
  -git push --tags upstream master
  +git checkout release
  +git merge master
  +git push --tags upstream release master
  ```
  