Fix using django.utils.simplejson. Now use json.

Author: dolgiyspb

fileupload/response.py

@@ -1,6 +1,6 @@
 # encoding: utf-8
 from django.http import HttpResponse
-from django.utils import simplejson
+import json
 
 MIMEANY = '*/*'
 MIMEJSON = 'application/json'
@@ -34,5 +34,5 @@ def a_iew(request):
     """
     def __init__(self, obj='', json_opts=None, mimetype=MIMEJSON, *args, **kwargs):
         json_opts = json_opts if isinstance(json_opts, dict) else {}
-        content = simplejson.dumps(obj, **json_opts)
+        content = json.dumps(obj, **json_opts)
         super(JSONResponse, self).__init__(content, mimetype, *args, **kwargs)