Added TRON and USDT over TRC20

We are pleased to inform you that Tron (TRX) coin has been added and fully tested on Cryptapi syetem, along with the token USDT over TRC20.

The endpoints are:

https://api.cryptapi.io/trx/

https://api.cryptapi.io/trc20/usdt/

Please be also informed that, due to very low volumes registered on past months, USDT over OMNI layer will be discontinued on our system from 1st Jan 2021