Allows a npm user to create a csv-list of all packages listed in a 'package.json' file, including the currently installed version of said package and the package-license
e.g. the result of running the npm-license-checker on the projects package.json:
Package Name; Installed Version; License
async; 1.5.0; "MIT"
semver; 5.1.0; "ISC"
superagent; 1.6.1; "MIT"