Django-rest-framework-simplify

Added get_filterable_properties to the SimplifyModel which will allow you to filter based on a property that is on the model. Currently this is restricted to predefined values and cannot accept arguments to the filter at this time. Look at the PhaseGroup model and URL for examples.

Added REQUEST_FIELDS_TO_SAVE to the SimplifyModel which will allow us to save fields from the request object directly to the SimplifyModel. This is a property that is set on the SimplifyModel and it is a list of tuples. For example if you wanted to save the "method" from the request onto a SimplyModel field of "verb" you would simply add the attribute REQUEST_FIELDS_TO_SAVE = [('method', 'verb')]