fix ox.image

Shared/lib/python3.4/site-packages/ox/js.py

@@ -1,16 +1,16 @@
 #!/usr/bin/python
 # -*- coding: utf-8 -*-
 # vi:si:et:sw=4:sts=4:ts=4
-import sys
 
-from ox.utils import json
+from six import PY2
+from .utils import json
 
 def minify(source, comment=''):
     # see https://github.com/douglascrockford/JSMin/blob/master/README
     def get_next_non_whitespace_token():
         pass
     # python2 performance with unicode string is terrible
-    if sys.version[0] == '2':
+    if PY2:
         if isinstance(source, unicode):
             source = source.encode('utf-8')
         if isinstance(comment, unicode):