public IndividualCategoryResponse UpdateCategory(Category category)
 {
     var body = new { category };
     return GenericPut<IndividualCategoryResponse>(string.Format("categories/{0}.json", category.Id), body);
 }
 public IndividualCategoryResponse CreateCategory(Category category)
 {
     var body = new {category};
     return GenericPost<IndividualCategoryResponse>(string.Format("categories.json"), body);
 }