[AD-995] Add SECURITY.md page and reference in README.md. (#437)

* [AD-995] Add SECURITY.md page an refernce in README.md.

* Commit Code Coverage Badge

Co-authored-by: birschick-bq <[email protected]>

Author: Bruce Irschick

README.md

@@ -64,3 +64,7 @@ The Amazon DocumentDB JDBC driver has a number of important limitations. See the
 If you're having an issue using the Amazon DocumentDB JDBC driver, consult the 
 [Troubleshooting Guide](src/markdown/support/troubleshooting-guide.md) to see if has a solution for 
 your issue.
+
+## Security Notice
+
+If you discover a potential security issue in this project, please consult our [security guidance page](SECURITY.md).

SECURITY.md

@@ -0,0 +1,5 @@
+## Reporting a Vulnerability
+
+If you discover a potential security issue in this project, we ask that you notify AWS/Amazon Security
+via our [vulnerability reporting page](https://aws.amazon.com/security/vulnerability-reporting/) or 
+directly via email to [aws-security](mailto:[email protected]).