Added resourcePath as per Swagger spec

Hi, making this pull request because swagger-codegen gets upset when resourcePath isn't included within the schema
the ```.{format}``` is not the default in tastypie as explained [here](http://django-tastypie.readthedocs.org/en/latest/cookbook.html#determining-format-via-url), I'd rather go with the ```?format=json``` syntax.

Also, could you switch to ```str.format()``` syntax ?

Thanks !