Add Scribble test files
Add integration tests for the conversation monitor FSM

The tests check:
1) parsing of the scribble protocol
2) generation of FSM based on scribble protocol
3) fsm processing of traces
Add unit test for the conversation monitor FSM class
Merge pull request #241 from pkediyal/coverage

increases coverage by fixing a problem with previous tests
Add missing Scribble test file
Change the test to inherit from IonIntegrationTestCase (instead of PyonTestCase)
Merge pull request #239 from rumineykova/conversation-monitor-tests

Add conversation monitor tests
Modified conversation monitor tests to use debug logging
Merge pull request #242 from shenrie/master

Modified conversation monitor tests to use debug logging
Refactored event publishing APIs
nose process leak plug in
Refinements and additional validation for event publishing
Fix indentation
Raise exceptions and return event objects when publishing events
Merge pull request #243 from shenrie/master

Refactored event publishing APIs
Removed _publish_event() funtion as unnecessary
Merge branch 'master' of github.com:ooici/pyon
Fixed broken Exchange test
Merge pull request #245 from shenrie/master

Removed unnecessary function and fixed test
Temporarily comment out event object validation