Merge pull request #6101 from Komnomnomnom/json-remove-bom

TST: json test file, make encoding explicit

Author: jreback

pandas/io/tests/test_json/test_ujson.py

@@ -1,4 +1,6 @@
-from unittest import TestCase
+# -*- coding: utf-8 -*-
+
+from unittest import TestCase
 
 try:
     import json