Bter API errors sometime comes with boolean, sometime String

[Desrever Nu]

in this example their api return a String

{"result":"false","msg":"Error: invalid pair nbt_eur, "}

in this other example their API return a boolean

{"result":false,"msg":"Error: you don't have enough fund"}

[Nicolò Paternoster]

fix issue #21

→ <<cset 867b21061cab>>