Improve the error messaging when missing required arguments
Improve the error messaging when missing required arguments

martindale/bitcore,martindale/bitcore,bitjson/bitcore,martindale/bitcore,bitjson/bitcore,bitjson/bitcore,bitpay/bitcore,bitjson/bitcore,martindale/bitcore,bitpay/bitcore,bitpay/bitcore,bitpay/bitcore