Fix typo in readme

Author: macro1

README.rst

@@ -20,7 +20,7 @@ django-simple-history
 
 django-simple-history stores Django model state on every create/update/delete.
 
-This app requires Django 1.4.2, 1.6 or greater and Python 2.6 or greater.
+This app requires Django 1.4.2, 1.6, or greater and Python 2.6 or greater.
 
 Getting Help
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