Add CONTRIBUTING file

CONTRIBUTING.rst

@@ -0,0 +1,65 @@
+Contributing to django-relatives
+================================
+
+Pull Requests
+-------------
+
+Feel free to open pull requests before you've finished your code or tests.
+Opening your pull request soon will allow others to comment on it sooner.
+
+A checklist of things to remember when making a feature:
+
+- Write tests if applicable
+- Note important changes in the `CHANGES`_ file
+- Update the `README`_ file if needed
+- Update the documentation if needed
+- Add yourself to the `AUTHORS`_ file
+
+.. _AUTHORS: AUTHORS.rst
+.. _CHANGES: CHANGES.rst
+.. _README: README.rst
+
+Requirements
+------------
+
+The Makefile can be used for generating documentation and running tests.
+
+To install the requirements necessary for generating the documentation and
+running tests::
+
+    make init
+
+This will install:
+
+- `tox`_: used for running the tests against all supported versions of Django
+  and Python
+- `coverage`_: used for analyzing test coverage for tests
+- `Sphinx`_: used for generating documentation
+
+If not using a virtualenv, the command should be prepended with ``sudo``.
+
+.. _tox: http://testrun.org/tox/latest//
+.. _coverage: http://nedbatchelder.com/code/coverage/
+.. _sphinx: http://sphinx-doc.org/
+
+Documentation
+-------------
+
+To regenate the documentation run::
+
+    make docs
+
+Testing
+-------
+
+Please add tests for your pull requests and make sure your changes don't break
+existing tests.
+
+To run tox and generate an HTML code coverage report (available in the
+``htmlcov`` directory)::
+
+    make test
+
+To quickly run the tests against a single version of Python and Django::
+
+    python setup.py test

README.rst

@@ -21,4 +21,8 @@ Documentation is available at https://django-simple-history.readthedocs.org/
 
 Issue tracker is at https://github.com/treyhunner/django-simple-history/issues
 
-Pull requests are welcome.
+Pull requests are welcome.  Read the `CONTRIBUTING`_ file for tips on
+submitting a pull request.
+
+.. _PyPI: https://pypi.python.org/pypi/django-email-log/
+.. CONTRIBUTING: CONTRIBUTING.rst