Add index file to assets
Add index file to assets

endemic/nonogram-backbone,endemic/nonogram-backbone,endemic/nonogram-backbone,endemic/nonogramjs,endemic/nonogramjs,endemic/nonogram-backbone,endemic/nonogramjs,endemic/nonogramjs,endemic/nonogram-backbone,endemic/nonogramjs,endemic/nonogramjs,endemic/nonogram-backbone,endemic/nonogramjs,endemic/nonogram-backbone