Provided by: npm_1.3.10~dfsg-1_all 
NAME
npm-version - Bump a package version
SYNOPSIS
npm.commands.version(newversion, callback)
DESCRIPTION
Run this in a package directory to bump the version and write the new data back to the package.json file.
If run in a git repo, it will also create a version commit and tag, and fail if the repo is not clean.
Like all other commands, this function takes a string array as its first parameter. The difference,
however, is this function will fail if it does not have exactly one element. The only element should be a
version number.
October 2013 NPM-VERSION(3)