Added ko.json(Korean)
#270 Added 1000 common words for Korean Language. Source from where data is obtained : https://en.wiktionary.org/wiki/Wiktionary:Frequency_lists/Korean_5800
Edited by Aman Jain
#270 Added 1000 common words for Korean Language. Source from where data is obtained : https://en.wiktionary.org/wiki/Wiktionary:Frequency_lists/Korean_5800