usgs/earthquake-event-ws — pull request #55 by jmfee-usgs (2014-12-09 22:59:04+00:00)
Title: Fix derived-eventtime moment-tensor property summarization

The event time is not included in derived origin information in the quakeml feed, which breaks validation.

These changes fix that problem:
- The property name uses a hyphen instead of underscore
- The property value is an ISO8601 formatted string.