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
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