ARIA-389 Apache Code of Conduct and minor spacing correction

README.rst

@@ -51,6 +51,7 @@ and run::
 |
 | Note: These dependencies may have varying licenses which may not be compatible with Apache license
 | 2.0.
+|
 
 **Ubuntu/Debian** (tested on Ubuntu 14.04, Ubuntu 16.04)::
 
@@ -166,3 +167,10 @@ ARIA is licensed under the
    :target: https://github.com/apache/incubator-ariatosca/pulls
 .. |Closed Pull Requests| image:: https://img.shields.io/github/issues-pr-closed-raw/apache/incubator-ariatosca.svg
    :target: https://github.com/apache/incubator-ariatosca/pulls?q=is%3Apr+is%3Aclosed
+
+Code of Conduct
+---------------
+
+The ARIA TOSCA Project follows `The Apache Code of Conduct <https://www.apache.org/foundation/policies/conduct.html>`__.
+
+