The package ruby-gettext-i18n-rails-js 1.3.0+dfsg-2 has been added to kali-rolling. It has been imported from Debian: https://tracker.debian.org/pkg/ruby-gettext-i18n-rails-js -- More information about ruby-gettext-i18n-rails-js: http://pkg.kali.org/pkg/ruby-gettext-i18n-rails-js