File "readme.txt"

Full Path: /var/www/bvnghean.vn/save_bvnghean.vn/wp-content/plugins/js_composer/locale/readme.txt
File size: 242 bytes
MIME-type: text/plain
Charset: utf-8

 
Open Edit   Advanced Editor   Back 
Official info about translation: http://codex.wordpress.org/Translating_WordPress

In two words: open default.po file and save new copy as js_composer-es_ES.po for Spanish.
And then use translating program to translate it to Spanish language.