Update README.md

Author: spavlusieva

README.md

@@ -61,10 +61,14 @@ The SDK for TypeScript and JavaScript currently supports NodeJS but does not hav
 
 ## Contributing
 
-`oci-typescript-sdk` is an open source project. See [CONTRIBUTING](https://github.com/oracle/oci-typescript-sdk/tree/master/CONTRIBUTING.md) for details.
+`oci-typescript-sdk` welcomes contributions from the community. Before submitting a pull request, please [review our contribution guide](./CONTRIBUTING.md)
 
 Oracle gratefully acknowledges the contributions to oci-typescript-sdk that have been made by the community.
 
+## Security
+
+Please consult the [security guide](./SECURITY.md) for our responsible security vulnerability disclosure process
+
 ## License
 
 Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.