[Bounty] Create a dist release that is compatible with ES2015 or Commonjs to support many platforms as possible.

[dbuarque]

Currently, the @tronprotocol/node-wallet-api is bundling the source code AS IS. In order to be compatible with many platforms as possible would be very interesting to bundle the release in a dist folder with output either as ES2015 or Commonjs to support many platforms as possible e.g. React Native.