fixup! Preserve attribute order when parsing

Make sure 2.6 support works

Author: gsnedders

README.rst

@@ -117,10 +117,6 @@ functionality:
   be determined; ``chardet``, from which it was forked, can also be used
   on Python 2.
 
-- ``ordereddict`` can be used under Python 2.6
-  (``collections.OrderedDict`` is used instead on later versions) to
-  serialize attributes in alphabetical order.
-
 
 Bugs
 ----

html5lib/html5parser.py

@@ -2,7 +2,11 @@
 from six import with_metaclass, viewkeys
 
 import types
-from collections import OrderedDict
+
+try:
+    from collections import OrderedDict
+except ImportError:
+    from ordereddict import OrderedDict
 
 from . import inputstream
 from . import tokenizer

requirements-optional.txt

@@ -15,7 +15,3 @@ lxml ; platform_python_implementation == 'CPython'
 # DATrie can be used in place of our Python trie implementation for
 # slightly better parsing performance.
 datrie ; platform_python_implementation == 'CPython'
-
-# Can be used to force attributes to be serialized in alphabetical
-# order.
-ordereddict ; python_version < '2.7'

requirements.txt

@@ -1,2 +1,3 @@
 six
 webencodings
+ordereddict ; python_version < '2.7'