Use /usr/bin/env, test for py33 and how to release in README.
diff --git a/README b/README
index 6f542d5..b1afd9c 100644
--- a/README
+++ b/README
@@ -1973,7 +1973,8 @@
 tzfile('Brazil/East')
 }}}
 
-== Building ==
+
+== Building and releasing ==
 When you get the source, it does not contain the internal zoneinfo
 database. To get (and update) the database, run the updatezinfo.py script. Make sure
 that the zic command is in your path, and that you have network connectivity
@@ -1981,9 +1982,19 @@
 the timezone data earlier, you can give the tarball as a parameter to
 updatezinfo.py.
 
+After testing any changes, changing the version information in dateutil/__init__.py
+and updating NEWS, a new release can be uploaded to PyPI with
+{{{
+python setup.py sdist upload
+}}}
+
+
 == Testing ==
 dateutil has a comprehensive test suite, which can be run simply by running the
 test.py script in the project root. Note that if you don't have the internal
 zoneinfo database, some tests will fail. Apart from that, all tests should pass.
 
+To easily test dateutil against all supported Python versions, you can use
+[[[http://tox.readthedocs.org/en/latest/ tox]]].
+
 ## vim:ft=moin
diff --git a/setup.py b/setup.py
index b9a7cf4..b6d8cdf 100755
--- a/setup.py
+++ b/setup.py
@@ -45,6 +45,7 @@
           'Programming Language :: Python :: 2.7',
           'Programming Language :: Python :: 3',
           'Programming Language :: Python :: 3.2',
+          'Programming Language :: Python :: 3.3',
           'Topic :: Software Development :: Libraries',
       ]
       )
diff --git a/test.py b/test.py
index 394992c..0388fbc 100755
--- a/test.py
+++ b/test.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 from __future__ import unicode_literals
 
diff --git a/tox.ini b/tox.ini
index 51c5d99..5d90c1c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py26, py27, py32
+envlist = py26, py27, py32, py33
 
 [testenv]
 commands = python test.py
diff --git a/updatezinfo.py b/updatezinfo.py
index 46b3cf7..627231a 100755
--- a/updatezinfo.py
+++ b/updatezinfo.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 import os
 import re
 import sys