Update README.md

Author: securedeveloper

README.md

@@ -4,6 +4,7 @@
 [![dependencies Status](https://david-dm.org/securedeveloper/react-data-export/status.svg)](https://david-dm.org/securedeveloper/react-data-export)
 [![devDependencies Status](https://david-dm.org/securedeveloper/react-data-export/dev-status.svg)](https://david-dm.org/securedeveloper/react-data-export?type=dev)
 [![Build Status](https://travis-ci.org/securedeveloper/react-data-export.svg?branch=master)](https://travis-ci.org/securedeveloper/react-data-export)
+[![Vulnerabilities](https://snyk.io/test/github/securedeveloper/react-data-export/badge.svg)](https://snyk.io/test/github/securedeveloper/react-data-export)
 [![Coverage Status](https://coveralls.io/repos/github/securedeveloper/react-data-export/badge.svg?branch=master)](https://coveralls.io/github/securedeveloper/react-data-export?branch=master)