Changes

               js/ lesson_name.js      ( javascript controlling logic for the lesson )         

               js/ lesson_name.js      ( javascript controlling logic for the lesson )         

               po/                      ( translation files )

               po/                      ( translation files )

                   ne_NP.po            # example translation file for Nepal - Nepali

                   ne-NP.po            # example translation file for Nepal - Nepali

                   sp_ES.po            # example translation file for traditional Spanish

                   sp-ES.po            # example translation file for traditional Spanish

               assets/

               assets/

                     generic/          # for language independent assets (e.g. arrows, background images, etc.)

                     generic/          # for language independent assets (e.g. arrows, background images, etc.)