Support for Decimal Part Other Than 2 Digits

[aaronice]

From the source code I notice that there is an important assumption when parsing the price data, that decimal part is 2 digits. Though it applies to many use cases when talking about "prices", I'd suggest that putting a note in the use guide just in case. Also, just wondering is it worth the effort to support different decimal places, such as "$0.0005", "BTC0.000001" etc. Thanks and looking forward to discussions.

[caiogondim]

Hello @aaronice

We have a test suite for that here: https://github.com/caiogondim/parse-price.js/blob/master/test/prices-examples.js

That makes sense for me to support even more currencies.
Could you submit a PR for that?

Make sure to add tests for that as well.

I can walk you through the code and test suite, but it's pretty straight forward.

[florisvink]

I made a PR to deal with those issues: #2