Updated foundation-datepicker.js to allow both prefix and postfix components
Fixed date constructor issue for FF & IE

https://github.com/najlepsiwebdesigner/foundation-datepicker/issues/20
Merge pull request #21 from build-failure/master

Fixed issue #20
Merge pull request #12 from jimjh/patch-1

Updated foundation-datepicker.js to allow both prefix and postfix comps.
Add Polish translation
Merge pull request #22 from mpasternak/master

Add Polish translation
Add spanish translations
Merge pull request #23 from jorpcolombia/patch-1

Add spanish translations