Added link to Code of Conduct in README

README.md

@@ -7,6 +7,7 @@
 [![Python Versions](http://img.shields.io/pypi/pyversions/Markdown.svg)](http://pypi.python.org/pypi/Markdown)
 [![BSD License](http://img.shields.io/badge/license-BSD-yellow.svg)](http://opensource.org/licenses/BSD-3-Clause)
 [![Issue Stats](http://issuestats.com/github/waylan/Python-Markdown/badge/issue?style=flat)](http://issuestats.com/github/waylan/Python-Markdown)
+[![Code of Conduct][https://img.shields.io/badge/code%20of%20conduct-contributor%20covenant-green.svg?style=flat-square]][Code of Conduct]
 
 This is a Python implementation of John Gruber's [Markdown][]. 
 It is almost completely compliant with the reference implementation,
@@ -36,3 +37,10 @@ You may ask for help and discuss various other issues on the [mailing list][] an
 
 [mailing list]: http://lists.sourceforge.net/lists/listinfo/python-markdown-discuss
 [bug tracker]: http://github.com/waylan/Python-Markdown/issues 
+
+Code of Conduct
+---------------
+
+Everyone interacting in the Python-Markdown project's codebases, issue trackers, and mailing lists is expected to follow the [Code of Conduct].
+
+[Code of Conduct]: https://github.com/waylan/Python-Markdown/blob/master/CODE_OF_CONDUCT.md