Add note about new locales

Changelog.md

 ## 0.3.0 [unreleased]
 * Fix mini_magick version to >= 4.9.4, due to CVE-2019-13574 vulnerability
 * Change rack version to >= 1.6.11 due to CVE-2018-16471 vulnerability
-
+* Add locales for de, no, zh-CN
 
 ## 0.2.0 [29 December 2016]
 * introduce support for Rails 4.2 and Refinery 3.0

README.md

@@ -49,7 +49,7 @@ All screenshots are in branch screenshots
 
 ## Language
 
-Gem is fully translated to slovak and english. Plupload is translated to 24 languages. You can add your own to
+Gem is fully translated to de, en, no, pl, sk, zh-CN languages. Plupload is translated to 24 languages. You can add your own to
 photo_gallery/app/assets/javascripts/refinery/photo_gallery/admin/plupload/i18n and enable it in config.plupload_locale
 
 ## Browser support