Update README.md

Author: zeroboo

README.md

@@ -12,7 +12,7 @@ A nodejs module contains utilities for randomly selecting elements
 
 ![CircleCI](https://circleci.com/gh/zeroboo/nodejs-random-selector.svg?style=svg)
 ![travis-ci](https://travis-ci.org/zeroboo/nodejs-random-selector.svg?branch=master)
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 # Features
 - Selecting elements with & without replacement