Valve/fingerprintjs — pull request #1 by joscha (2013-05-29 13:54:26+00:00)
Title: Make it work with node, mocha and jsdom

When using Fingerprint in a node/mocha/jsdom test environment I found out that the map function could not be used due to wrong scoping.
These changes fix the scoping by passing in the window object as the explicit scope