Extension to GitHubClient for returning additional event-specific information instead of just generic response
IOUtilities class
Implemented glue to expose events in GitHub API
Factored snakeCaseToCamelCase out into new Utility class
Implemented other event types
Implemented fields more descriptively instead of with a String->String map; this latter also wouldn't be able to handle User values (for assigning events)
Changed interface of GitHubEventsResponse