Compatibility with python 3.2

Now all the python 2/3 compatibility code is in elasticsearch.compat
Fixes #52

test_elasticsearch/test_client/test_utils.py

@@ -1,16 +1,17 @@
 # -*- coding: utf-8 -*-
 from elasticsearch.client.utils import _make_path
+from elasticsearch.compat import PY2, u
 
 from ..test_cases import TestCase, SkipTest
 
 class TestMakePath(TestCase):
     def test_handles_unicode(self):
-        id = u"中文"
+        id = u("中文")
         self.assertEquals('/some-index/type/%E4%B8%AD%E6%96%87', _make_path('some-index', 'type', id))
 
     def test_handles_utf_encoded_string(self):
-        if type('') is type(u''):
+        if not PY2:
             raise SkipTest('Only relevant for py2')
-        id = u"中文".encode('utf-8')
+        id = u("中文").encode('utf-8')
         self.assertEquals('/some-index/type/%E4%B8%AD%E6%96%87', _make_path('some-index', 'type', id))