Doc about our Sponsors (#1221)

We have Sponsors that provide vital services to the Sceptre
community and so we need to track that info somewhere in case
one of those services goes sideways or needs to be updated.

CONTRIBUTING.md

@@ -203,6 +203,16 @@ $ behave integration-tests --include <feature-file>
 $ behave integration-tests -n "<scenario-name>"
 ```
 
+# Sponsors
+
+* [Sage Bionetworks](https://sagebionetworks.org/) donated the AWS account for running Sceptre integration
+  tests.  Please contact it@sagebase.org for support.
+* [GoDaddy](https://www.godaddy.com/) donated [the domain](https://docs.sceptre-project.org) for hosting
+  the Sceptre project.  Please contact oss@godaddy.com for support.
+* [Cloudreach](https://www.cloudreach.com/) started the Sceptre project and continuted to maintain it
+  until the ver 2.4 release.  It has since been extricated from Cloudreach and has been maintained
+  by members of the Sceptre open source community.
+
 # Credits
 
 This document took inspiration from the CONTRIBUTING files of the

README.md

@@ -266,10 +266,20 @@ Full API reference documentation can be found in the
 
 ## Communication
 
-The Sceptre community uses a Slack channel #sceptre on the og-aws Slack for
-discussion. To join use this link <http://slackhatesthe.cloud/> to create an
-account and join the #sceptre channel.
+Sceptre community discussions happen in the #sceptre chanel in the
+[og-aws Slack](https://github.com/open-guides/og-aws).  To join click
+on <http://slackhatesthe.cloud/> to create an account and join the
+#sceptre channel.
 
 ## Contributing
 
 See our [Contributing Guide](CONTRIBUTING.md)
+
+
+## Sponsors
+
+[![Sage Bionetworks](sponsors/sage_bionetworks_logo.png "Sage Bionetworks")](https://sagebionetworks.org)
+
+[![GoDaddy](sponsors/godaddy_logo.png "GoDaddy")](https://www.godaddy.com)
+
+[![Cloudreach](sponsors/cloudreach_logo.png "Cloudreach")](https://www.cloudreach.com)