Change CONTRIBUTING to use ReST syntax and rename back.

Author: whitequark

CONTRIBUTING.md

@@ -0,0 +1,37 @@
+Sending Patches
+===============
+
+Patches for MiSoC may be sent via GitHub pull requests. Alternatively, if
+you prefer using mailing lists, they can also be sent to
+the `public mailing list <mailto:[email protected]>`_ after
+`subscribing <https://ssl.serverraum.org/lists/listinfo/devel>`_.
+
+Before sending patches, please read the rest of this guide and make sure your
+patch meets the following criteria;
+
+* Meets style guide requirements listed below.
+* Includes a suitable commit message.
+
+Help
+----
+
+If your submission is large and complex and/or you are not sure how to proceed,
+feel free to discuss it on the mailing list or IRC (#m-labs on Freenode)
+beforehand.
+
+Style Guide
+-----------
+
+All code should be compliant with the
+`PEP8 style guide <https://www.python.org/dev/peps/pep-0008/>`_.
+
+You can use the `pep8 tool <https://www.python.org/dev/peps/pep-0008/>`_ to check
+compliance with ``pep8 myfile.py``.
+
+When modifying existing code **be consistent** with any existing code style.
+
+License
+=======
+
+All new contributions should be under the same license as MiSoC. This is a very
+permissive two-clause BSD license; see `full license text <LICENSE>`_.