Fixed NullPointerException on replaying snapshot events; Fixed NoClassDefFound exception
Merge pull request #12 from MichaelHilton/master

Added code to preprocess the events file to be able to replay without manual edits.
Incorporated Caius's comments on pull request #13
Merge pull request #13 from altern/snapshotComparison

Fixed NullPointerException on replaying snapshot events;