add Code of Conduct
add Code of Conduct

Needs to be updated with an email address for a maintainer.

tddv/readthedocs.org,rtfd/readthedocs.org,rtfd/readthedocs.org,davidfischer/readthedocs.org,davidfischer/readthedocs.org,davidfischer/readthedocs.org,rtfd/readthedocs.org,safwanrahman/readthedocs.org,pombredanne/readthedocs.org,rtfd/readthedocs.org,pombredanne/readthedocs.org,davidfischer/readthedocs.org,safwanrahman/readthedocs.org,tddv/readthedocs.org,safwanrahman/readthedocs.org,safwanrahman/readthedocs.org,tddv/readthedocs.org,pombredanne/readthedocs.org