Add devel/zanata-cli: Zanata Java command line client

The Zanata Command line client (CLI) is the perfect way to connect to a Zanata
server to push and pull content.

Features:

• Initialize a Translation project from the command line.
• Push source content to the Zanata server.
• Pull translated content from the Zanata server.

WWW: http://docs.zanata.org/en/release/client/