Cloudname/cloudname — pull request #120 by birgirst (2013-01-14 13:18:23+00:00)
Title: Added support for listening to resolver for given expression

Added resolver-expression flag which can be used to register a listener that will help with debugging.
Setting that flag when running ZkTool will setup a listener which will listen to and write to console any events matching the expression until user terminates the listening.