serialization.rb in ripple-0.9.2

- old
+ new

@@ -9,13 +9,13 @@
 #    Unless required by applicable law or agreed to in writing, software
 #    distributed under the License is distributed on an "AS IS" BASIS,
 #    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
-require 'ripple'
+
+require 'active_support/concern'
 require 'active_model/serialization'
 require 'active_model/serializers/json'
-require 'active_model/serializers/xml'
 
 module Ripple
   # Provides methods for serializing Ripple documents to external
   # formats (e.g. JSON).  By default, embedded documents will be
   # included in the resulting format.