docs(readme): add Greenkeeper badge

greenkeeper[bot] · greenkeeper[bot] · commit ca1177b148b2 · 2019-05-04T23:42:35.000Z
diff --git a/README.md b/README.md
@@ -1,4 +1,4 @@
-# react-use-hover [![Build Status](https://travis-ci.com/andrewbranch/react-use-hover.svg?branch=master)](https://travis-ci.com/andrewbranch/react-use-hover) [![NPM Version](https://img.shields.io/npm/v/react-use-hover.svg)](https://www.npmjs.com/package/react-use-hover) [![Minified size](https://img.shields.io/bundlephobia/min/react-use-hover.svg)](https://www.npmjs.com/package/react-use-hover)
+# react-use-hover [![Build Status](https://travis-ci.com/andrewbranch/react-use-hover.svg?branch=master)](https://travis-ci.com/andrewbranch/react-use-hover) [![NPM Version](https://img.shields.io/npm/v/react-use-hover.svg)](https://www.npmjs.com/package/react-use-hover) [![Minified size](https://img.shields.io/bundlephobia/min/react-use-hover.svg)](https://www.npmjs.com/package/react-use-hover) [![Greenkeeper badge](https://badges.greenkeeper.io/andrewbranch/react-use-hover.svg)](https://greenkeeper.io/)
 
 A React state hook to determine whether a React element is being hovered.
 

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`@@ -1,4 +1,4 @@`
`1`		`-# react-use-hover [![Build Status](https://travis-ci.com/andrewbranch/react-use-hover.svg?branch=master)](https://travis-ci.com/andrewbranch/react-use-hover) [![NPM Version](https://img.shields.io/npm/v/react-use-hover.svg)](https://www.npmjs.com/package/react-use-hover) [![Minified size](https://img.shields.io/bundlephobia/min/react-use-hover.svg)](https://www.npmjs.com/package/react-use-hover)`
	`1`	+# react-use-hover [![Build Status](https://travis-ci.com/andrewbranch/react-use-hover.svg?branch=master)](https://travis-ci.com/andrewbranch/react-use-hover) [![NPM Version](https://img.shields.io/npm/v/react-use-hover.svg)](https://www.npmjs.com/package/react-use-hover) [![Minified size](https://img.shields.io/bundlephobia/min/react-use-hover.svg)](https://www.npmjs.com/package/react-use-hover) [![Greenkeeper badge](https://badges.greenkeeper.io/andrewbranch/react-use-hover.svg)](https://greenkeeper.io/)
`2`	`2`
`3`	`3`	`A React state hook to determine whether a React element is being hovered.`
`4`	`4`