Supporting exchanges: Bithumb, Coinone
Codes are quite self-explanatory. You can expand this to add whatever APIs which are not implemented yet by using public_api and private_api methods.
Use the code at your OWN risk.
bithumb_api = Bithumb.new(bithumb_keys['API_KEY'], bithumb_keys['SECRET_KEY'])
coinone_api = Coinone.new(coinone_keys['API_KEY'], coinone_keys['SECRET_KEY'])
p bithumb_api.balance('eos')
p coinone_api.balance('eos')