outten45/rails_riemann_middleware — pull request #7 by patrickmcelwee (2013-09-12 20:56:25+00:00)
Title: Add additional headers and extract Rails-specific support for old exception_notification API

I just discovered that the newest version of exception_notification
(4.0) has itself changed this API. So, the transition may not be
important much longer. But, it works for this gem, to provide the
ability to explicitly report an exception.