chore(readme): remove Greenkeeper badge (#36)

Co-authored-by: greenkeeper[bot] <23040076+greenkeeper[bot]@users.noreply.github.com>

Author: greenkeeper[bot]

README.md

@@ -4,7 +4,7 @@ React component which automatically converts URLs, email addresses, phone number
 
 [![Build Status](https://travis-ci.org/gvas/react-autolinker-wrapper.svg?branch=master)](https://travis-ci.org/gvas/react-autolinker-wrapper)
 [![Coverage Status](https://coveralls.io/repos/github/gvas/react-autolinker-wrapper/badge.svg?branch=master)](https://coveralls.io/github/gvas/react-autolinker-wrapper?branch=master)
-[![Greenkeeper badge](https://badges.greenkeeper.io/gvas/react-autolinker-wrapper.svg)](https://greenkeeper.io/)
+
 
 ## Install