Add release memo

RELEASE.rst

@@ -0,0 +1,28 @@
+Things to do when releasing a new version
+=========================================
+
+This file is a memo for the maintainer.
+
+
+1. Release
+----------
+
+* Update version number in ``setup.py``
+* Update version number in ``rivalcfg/version.py``
+* Edit / update changelog in ``README.rst``
+* Commit / tag (``git commit -m vX.Y.Z && git tag vX.Y.Z && git push && git push --tags``)
+
+
+2. Publish PyPI package
+-----------------------
+
+Publish source dist and wheels on PyPI.
+
+→ Automated :)
+
+
+3. Publish Github Release
+~~~~~~~~~~~~~~~~~~~~~~~~~
+
+* Make a release on Github
+* Add changelog