Add bower badge

Author: nosir

README.md

@@ -3,6 +3,7 @@
 [![Travis](https://img.shields.io/travis/nosir/cleave.js.svg?maxAge=2592000)](https://travis-ci.org/nosir/cleave.js)
 [![Codacy branch grade](https://img.shields.io/codacy/grade/b1c0b0da42fa418f887076a3f7352aea/master.svg?maxAge=2592000)](https://www.codacy.com/app/nosir/cleave-js)
 [![npm version](https://badge.fury.io/js/cleave.js.svg)](https://badge.fury.io/js/cleave.js)
+[![Bower version](https://badge.fury.io/bo/cleave.js.svg)](https://badge.fury.io/bo/cleave.js)
 
 Cleave.js has a simple purpose: to help you format input text content automatically.