Update README.md

Author: voxpelli

README.md

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 # Jekyll Utils
 
-[![Build Status](https://travis-ci.com/voxpelli/node-jekyll-utils.svg?branch=master)](https://travis-ci.com/voxpelli/node-jekyll-utils)
-[![Coverage Status](https://coveralls.io/repos/voxpelli/node-jekyll-utils/badge.svg)](https://coveralls.io/r/voxpelli/node-jekyll-utils)
-[![dependencies Status](https://david-dm.org/voxpelli/node-jekyll-utils/status.svg)](https://david-dm.org/voxpelli/node-jekyll-utils)
-[![Known Vulnerabilities](https://snyk.io/test/github/voxpelli/node-jekyll-utils/badge.svg?targetFile=package.json)](https://snyk.io/test/github/voxpelli/node-jekyll-utils?targetFile=package.json)
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 A collection of Jekyll utilility methods to generate eg. Jekyll permalinks and slugs