Updated Java Library

Hi, 

I've created a complete Java library for working with WooCommerce REST API v3 

I notice the current one is A: rather old B: still requires a lot of work from the end user. 

Hopefully I have built it for end-user simplicity. 

Library is in Maven and source/documentation can be found here: 
https://github.com/christwinn/woocommerce-api-client-java

Please let me know. 

Many thanks,

Chris, 



