Add Taiwan currency

[gukii]

Hi. The currency list is missing the "New Taiwan Dollar" currency, NTD for short.
However, the region Taiwan/China is present in the country list.

So, seems to just be missing the currency.

[olivermrbl]

Thanks for filing this @gukii. I'd be happy to accept a PR for it if you want to give it a go?

[gukii]

I ll give it a try. A PR from a fork, right?

[gukii]

The currency is already present. My bad..