Corrected the path to the CSS file
Corrected the path to the CSS file

The `main` property in `bower.json` is used by some NPM packages to inject the required assets to the HTML automatically. The reference to the stylesheet wasn't correct, I had to override it on my global `bower.json` to inject it correctly.
najlepsiwebdesigner/foundation-datepicker,najlepsiwebdesigner/foundation-datepicker