Preparing release.
Fix links. This closes issue #163.
Update integration.rst

Added link to Django integration
Merge pull request #165 from cconrad/patch-1

Update integration.rst
Support for Python 3.4's NameConstant in AST

Python 3.4 adds a new NameConstant AST node type, representing
a None, False or True literal.

This change adds support for the new node type.

Fixes #168
Merge pull request #169 from brakhane/master

Support for Python 3.4's NameConstant in AST