sevrest/main.py:  Added functionality to parse returned structure (currently limited to plugins, object types, and indicator types) into their respective classes; also, throw a custom exception if we get an error code back from the server
sevrest/main.py:  Added functionality to parse returned structure (currently limited to plugins, object types, and indicator types) into their respective classes; also, throw a custom exception if we get an error code back from the server

sevone/pysevone