extend documentation; fixes #5

doc/testing.rst

@@ -0,0 +1,15 @@
+
+
+Testing Autocmake
+=================
+
+You will need to install `pytest <http://pytest.org/>`__.
+Check also the `Travis build and test recipe <https://github.com/scisoft/autocmake/blob/master/.travis.yml>`__
+for other requirements.
+
+Your contributions and changes should preserve the test set. You can run it locally with::
+
+  $ py.test test/test.py
+
+This test set is run upon each push to the central repository.
+See also the `Travis build and test history <https://travis-ci.org/scisoft/autocmake/builds>`__.