Add badges.

Author: CISC

README.md

@@ -1,5 +1,11 @@
 # scjs - A simple interface to Scala Content Manager web-services.
 
+[![NPM Version][npm-image]][npm-url]
+[![NPM Downloads][downloads-image]][downloads-url]
+[![GitHub Issues][issues-image]][issues-url]
+[![GitHub Pull Requests][pulls-image]][pulls-url]
+[![Known Vulnerabilities][vulns-image]][vulns-url]
+
 This module is loosely modelled after the scws2 Python module, supporting the 2.x REST API.
 
 ## Example usage (set DEBUG=scjs for debug output):
@@ -28,3 +34,14 @@ cm.login(username, password).then((resp) => {
     console.log(e);
 });
 ```
+
+[npm-image]: https://img.shields.io/npm/v/scjs.svg
+[npm-url]: https://npmjs.org/package/scjs
+[downloads-image]: https://img.shields.io/npm/dt/scjs.svg
+[downloads-url]: https://npmjs.org/package/scjs
+[issues-image]: https://img.shields.io/github/issues/cisc/scjs.svg
+[issues-url]: https://github.com/cisc/scjs/issues
+[pulls-image]: https://img.shields.io/github/issues-pr/cisc/scjs.svg
+[pulls-url]: https://github.com/cisc/scjs/pulls
+[vulns-image]: https://snyk.io/test/npm/scjs/badge.svg
+[vulns-url]: https://snyk.io/test/npm/scjs