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"
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