Language folder

On WooThemes’ Localization guide here http://wcdocs.woothemes.com/user-guide/localization/
it is suggested to keep custom translation on separate folder.

I’ve used CodeStyling but WC is getting translation from i18n/languages folder.

How to set the folder to wp-content/languages/woocommerce/ ?

http://wordpress.org/extend/plugins/woocommerce/