Contributing statement (scikit-learn#7097)

* MISC: remove broken link

* Statement on the process + values of the community

To answer the demand for a CoC

* DOC: add links to contributing page

* DOC: Documenation contribution are important

Author: GaelVaroquaux

doc/about.rst

@@ -5,6 +5,10 @@ About us
 
 .. include:: ../AUTHORS.rst
 
+.. seealso::
+
+   :ref:`How you can contribute to the project <contributing>`
+
 .. _citing-scikit-learn:
 
 Citing scikit-learn
@@ -96,7 +100,7 @@ program.
 - 2007 - David Cournapeau
 - 2011 - `Vlad Niculae`_
 - 2012 - `Vlad Niculae`_, Immanuel Bayer.
-- 2013 - `Kemal Eren`_, Nicolas Trésegnie
+- 2013 - Kemal Eren, Nicolas Trésegnie
 - 2014 - Hamzeh Alsalhi, Issam Laradji, Maheshakya Wijewardena, Manoj Kumar.
 
 It also provided funding for sprints and events around scikit-learn. If

doc/developers/contributing.rst

@@ -14,6 +14,26 @@ adding new algorithms, and the best way to contribute and to help the project
 is to start working on known issues.
 See :ref:`easy_issues` to get started.
 
+.. topic:: **Our community, our values**
+
+    We are a community based on openness and friendly, didactic,
+    discussions.
+
+    We aspire to treat everybody equally, and value their contributions.
+
+    Decisions are made based on technical merit and consensus.
+
+    Code is not the only way to help the project. Reviewing pull
+    requests, answering questions to help others on mailing lists or
+    issues, organizing and teaching tutorials, working on the website,
+    improving the documentation, are all priceless contributions.
+
+    We abide by the principles of openness, respect, and consideration of
+    others of the Python Software Foundation:
+    https://www.python.org/psf/codeofconduct/
+
+|
+
 Submitting a bug report
 =======================
 

doc/index.rst

@@ -234,7 +234,7 @@
                 <div class="span4">
                     <h4>Community</h4>
                     <ul>
-                    <li><em>About us</em> See <a href="about.html#people">authors</a></li>
+                    <li><em>About us</em> See <a href="about.html#people">authors</a> and <a href="developers/contributing.html">contributing</a></li>
                     <li><em>More Machine Learning</em> Find <a href="related_projects.html">related projects</a></li>
                     <li><em>Questions?</em> See <a href="faq.html">FAQ</a> and <a href="http://stackoverflow.com/questions/tagged/scikit-learn">stackoverflow</a></li>
                     <li><em>Mailing list:</em> <a href="https://mail.python.org/mailman/listinfo/scikit-learn">scikit-learn@python.org</a></li>