Add currency symbols like "€" or "$" to country codes

[erf]

I would like to see currency symbols in https://datahub.io/core/country-codes

E.g. "$" for USD, "€" for EUR, or "kr" for NOK

See: https://www.xe.com/symbols.php

https://gist.github.com/Chintan7027/fc4708d8b5c8d1639a7c

[rufuspollock]

@erf thanks for the feedback - could you open an issue about this on the underlying dataset here https://github.com/datasets/country-codes

/cc @sglavoie @nirabpudasaini

[rufuspollock]

INVALID. This is related to an underlying dataset. https://github.com/datasets/country-codes

[erf]

Done