Simplify health checks: get rid of response code list
Use correct range
Merge pull request #260 from mesosphere/health-api-simple

Simplify health checks: get rid of response code list
Fixes #146 - Zookeeper connection errors on start
Formatting fix
Merge pull request #265 from mesosphere/wip-146-zk-robustness

Fixes #146 - Zookeeper connection errors on start
use instance binding
Added a dataTimeString property to the MarathonEvent object. This property is populated with the current date/time (UTC timezone) with ISO8601 formatting. Renamed FrameworkMessageEvent to MesosFrameworkMessageEvent to make it clear that this object is for the scheduler.