Added missing sections to README

Author: martenpayne

README.md

@@ -70,3 +70,12 @@ all the lambdas, the website, the infrastructure and then initiates the CDK depl
 ### Run
 
 Once the deployment has finished, you can open the CloudFront URL printed by the deployment script or run from a local Node session. To run a local instance of the React front-end, you will need to grab a copy of the "runtime-config.js" file that the CDK deployment process created (in the S3 static website bucket) and copy it to "Website/public".
+
+
+## Security
+
+See [CONTRIBUTING](CONTRIBUTING.md#security-issue-notifications) for more information.
+
+## License
+
+This library is licensed under the MIT-0 License. See the [LICENSE](LICENSE.txt) file.