Add release procedure to development docs.

docs/developing.rst

@@ -10,7 +10,7 @@ The unit tests can be run via ``setup.py``::
   $ ./bin/python setup.py test
 
 Tox_ can be used to run the tests with both Python 2 and 3. The Tox
-configuration will run the tests with Sphinx 1.1.x, Sphinx 1.2.x, and
+configuration will run the tests with Sphinx 1.4, Sphinx 1.5, Sphinx 1.6, and
 the development branch. Note that Hieroglyph requires Tox 1.8.
 
 ::
@@ -34,7 +34,31 @@ Then run the tests using ``rake``::
 
   $ rake jasmine:ci JASMINE_CONFIG_PATH=./src/jstests/jasmine.yml
 
+Releasing
+=========
+
+Hieroglyph uses `Versioneer`_ to manage version numbers in releases. Versioneer
+derives the version number from the latest tag and source information.
+
+To make a release, use the following steps.
+
+1. Update ``NEWS.txt`` to include the release date and information.
+#. Tag the release with git::
+
+    $ git tag hieroglyph-x.y.z
+
+#. Build the distributions::
+
+    $ python setup.py sdist bdist_wheel
+
+#. Upload the distributions to PyPI; the recommended tool for this is Twine_.
+   ::
+
+    $ twine upload dist/*
+
 .. _Buildout: https://pypi.python.org/pypi/zc.buildout/2.2.1
 .. _Tox: http://tox.readthedocs.org/en/latest/
 .. _Jasmine: http://jasmine.github.io/
 .. _Bundler: http://bundler.io/
+.. _Versioneer: https://github.com/warner/python-versioneer
+.. _Twine: https://pypi.python.org/pypi/twine