feat: add Snyk

.travis.yml

@@ -1,8 +1,6 @@
 language: node_js
 node_js:
-  - 8
   - 10
-  - 12
 
 before_script:
   - npm pack

README.md

@@ -2,7 +2,7 @@
 nprr: npm run + autocomplete 🚀
 
 [![Build Status](https://travis-ci.com/NoriSte/nprr.svg?branch=master)](https://travis-ci.com/NoriSte/nprr) [![Coverage Status](https://coveralls.io/repos/github/NoriSte/nprr/badge.svg?branch=master)](https://coveralls.io/github/NoriSte/nprr?branch=feature/nprr) [![Mutation testing badge](https://badge.stryker-mutator.io/github.com/NoriSte/nprr/master)](https://stryker-mutator.github.io) [![Build Cron](https://img.shields.io/badge/build%20cron-weekly-44cc11.svg)](https://travis-ci.com/NoriSte/nprr)
-<br />[![Renovate enabled](https://img.shields.io/badge/renovate-enabled-brightgreen.svg)](https://renovatebot.com/) [![Commitizen friendly](https://img.shields.io/badge/commitizen-friendly-brightgreen.svg)](http://commitizen.github.io/cz-cli/) [![semantic-release](https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg)](https://github.com/semantic-release/semantic-release) [![Open Source Love](https://badges.frapsoft.com/os/mit/mit.svg?v=102)](https://github.com/ellerbrock/open-source-badge/)
+<br />[![Renovate enabled](https://img.shields.io/badge/renovate-enabled-brightgreen.svg)](https://renovatebot.com/) [![Commitizen friendly](https://img.shields.io/badge/commitizen-friendly-brightgreen.svg)](http://commitizen.github.io/cz-cli/) [![semantic-release](https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg)](https://github.com/semantic-release/semantic-release) [![Open Source Love](https://badges.frapsoft.com/os/mit/mit.svg?v=102)](https://github.com/ellerbrock/open-source-badge/) [![Known Vulnerabilities](https://snyk.io/test/github/noriste/nprr/badge.svg)](https://snyk.io/test/github/noriste/nprr)
 
 ## What is nprr?