[new] code refactored to accept handlers for others ORMs
[release] 0.0.2
[release] 0.0.2
* [update] RestHandler adapted to be used for other ORMs.
* [new] MongoEngineRestHandler
* [new] Template customization: LIST_TEMPLATE, EDIT_TEMPLATE, SHOW_TEMPLATE variables.
* [update] Using OO instead of metaclasses for object list.
* [update] Better exception to alert bad implementations.
* [tests] Initial unit tests.