Missing supported currencies/coins for API requests #7
Description
Hi,
It seems to me that the API doesn't yet support all coins. I tried querying coins like PEP or BELLS in the reward history, but I get an invalid argument for the coin. The same applies to the wallet history API; no USDT transactions are displayed. Please clearly state in the documentation which coins are available for each API. Ideally, all currencies supported and used by viaBTC should be available.