Windows OS Script Fix

[laniehei]

If you are running on windows, you will have to make the following change to the "test:unit" script in your package.json:

"test:unit": "SET NODE_ENV=testing rm -rf ./tmp/mocha-webpack && mocha-webpack --webpack-config webpack.testing.js \"src/**/*.spec.js\" --timeout 10000 --require source-map-support/register",

You'll notice that SET was placed at the beginning of the script.