#v3.0 - v3 architecture standard implemented (bitpay#47)

* - Init from conf file implemented

* - Version upgrade

* - Standard Client constructors implemented

* - Guide updated

* - Readme updated

* - Doc updated

* - Code cleanup

* - Code refactor

bitpay#2.4 - Version updated (bitpay#46)

#v2-1 - Dependency update (bitpay#35)

- Dependencies up to date

Merge pull request bitpay#22 from pieterpoorthuis/master

Fixed bitpay#20

Merge pull request bitpay#18 from kleetus/feature/dont-auth-invoice-e…

…ndpoint

Feature/dont auth invoice endpoint

Fixes a bug where the invoice fails on new json fields

Minor updates

Merge pull request bitpay#1 from sambohler/master

Added EcKey constructor signatures to make clientName and envUrl optiona...

New Java API client library.