Adding 'Resources' section to the docs (#5823)

* Adding 'Resources' section to the docs

* Join slack entry

README.md

@@ -130,6 +130,7 @@ Resources
 * [Docker image](https://hub.docker.com/r/amancevice/superset/) (community contributed)
 * [Slides from Strata (March 2016)](https://drive.google.com/open?id=0B5PVE0gzO81oOVJkdF9aNkJMSmM)
 * [Stackoverflow tag](https://stackoverflow.com/questions/tagged/apache-superset)
+* [Join our Slack](https://join.slack.com/t/apache-superset/shared_invite/enQtNDMxMDY5NjM4MDU0LTc2Y2QwYjE4NGYwNzQyZWUwYTExZTdiZDMzMWQwZjc2YmJmM2QyMDkwMGVjZTA4N2I2MzUxZTk2YmE5MWRhZWE)
 * [DEPRECATED Google Group](https://groups.google.com/forum/#!forum/airbnb_superset)
 
 

docs/index.rst

@@ -24,6 +24,19 @@ intelligence web application
     the code, it does indicate that the project has yet to be fully
     endorsed by the ASF.
 
+Resources
+=========
+- `Superset's Github <https://github.com/apache/incubator-superset>`_, note
+  that `we use Github for issue tracking <https://github.com/apache/incubator-superset/issues>`_
+- Superset's
+  `contribution guidelines <https://github.com/apache/incubator-superset/blob/master/CONTRIBUTING.md>`_
+  and
+  `code of conduct <https://github.com/apache/incubator-superset/blob/master/CODE_OF_CONDUCT.md>`_
+  on Github.
+- Our `mailing list archives <https://lists.apache.org/list.html?dev@superset.apache.org>`_.
+  To subscribe, send an email to ``dev-subscribe@superset.apache.org``
+- `Join our Slack <https://join.slack.com/t/apache-superset/shared_invite/enQtNDMxMDY5NjM4MDU0LTc2Y2QwYjE4NGYwNzQyZWUwYTExZTdiZDMzMWQwZjc2YmJmM2QyMDkwMGVjZTA4N2I2MzUxZTk2YmE5MWRhZWE>`_
+
 Overview
 ========