remove backwards compatible code, use npm versioning instead

[ralphtheninja]

Removed code for backwards compatibility. If you publish this as 0.2.0, code that needs to be backwards compatible can still use 0.1.0. Let npm and package.json take care of the rest :)

Note that I also changed the return value to an empty object instead of returning null if no info can be found for a particular coin.

I aim to add more support for default ports (could also have default rpc port) and also for network magic numbers.

[jprichardson]

Hmm, not sure how I missed this PR. Sorry. Why do you think {} is better than null?

[ralphtheninja]

I prefer to avoid null if possible and instead check the property on the returned object. I can put back null if you want.

[jprichardson]

Yeah, I'd prefer null. It seems odd to return a truthy value for something that doesn't exist.

This feels pretty intuitive:

if (!coininfo('FAKE-COIN'))
  console.log('FAKE-COIN does not exist')

[ralphtheninja]

Updated.

[jprichardson]

Sorry this took me so long to review!! Thanks again :)

[ralphtheninja]

Np :)