deprecated node modules

[didito]

Sorry, not a node/npm guy so don't know how to fix it and therefore can't submit a pull request.
But for security reasons would be nice to update the required package versions.

npm WARN deprecated minimatch@2.0.10: Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue
npm WARN deprecated CSSselect@0.4.1: the module is now available as 'css-select'
npm WARN deprecated CSSwhat@0.4.7: the module is now available as 'css-what'
npm WARN deprecated find-file@0.1.4: Use the globby package instead

Thanks for sharing the workshop! I love it