remove coverage badge from readme

Author: amilajack

README.md

@@ -1,7 +1,6 @@
 babel-plugin-fail-explicit
 ==========================
 [![Build Status](https://travis-ci.org/amilajack/babel-plugin-fail-explicit.svg?branch=master&maxAge=2592)](https://travis-ci.org/amilajack/babel-plugin-fail-explicit)
-[![Coverage Status](https://coveralls.io/repos/github/amilajack/babel-plugin-fail-explicit/badge.svg?branch=master)](https://coveralls.io/github/amilajack/babel-plugin-fail-explicit?branch=master)
 [![NPM version](https://badge.fury.io/js/babel-plugin-fail-explicit.svg?maxAge=2592)](http://badge.fury.io/js/babel-plugin-fail-explicit)
 [![Dependency Status](https://img.shields.io/david/amilajack/babel-plugin-fail-explicit.svg?maxAge=2592)](https://david-dm.org/amilajack/babel-plugin-fail-explicit)
 [![npm](https://img.shields.io/npm/dm/babel-plugin-fail-explicit.svg?maxAge=2592)](https://npm-stat.com/charts.html?package=babel-plugin-fail-explicit)