docs(readme): repoint travis-ci badge from .org to .com

README.md

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 # node-poppler
 
 [![GitHub Release](https://img.shields.io/github/release/Fdawgs/node-poppler.svg)](https://github.com/Fdawgs/node-poppler/releases/latest/) [![npm version](https://img.shields.io/npm/v/node-poppler)](https://www.npmjs.com/package/node-poppler)
-[![Build Status](https://travis-ci.org/Fdawgs/node-poppler.svg?branch=master)](https://travis-ci.org/Fdawgs/node-poppler) [![Coverage Status](https://coveralls.io/repos/github/Fdawgs/node-poppler/badge.svg?branch=master)](https://coveralls.io/github/Fdawgs/node-poppler?branch=master) [![code style: prettier](https://img.shields.io/badge/code_style-prettier-ff69b4.svg?style=flat-square)](https://github.com/prettier/prettier)
+[![Build Status](https://travis-ci.com/Fdawgs/node-poppler.svg?branch=master)](https://travis-ci.com/Fdawgs/node-poppler) [![Coverage Status](https://coveralls.io/repos/github/Fdawgs/node-poppler/badge.svg?branch=master)](https://coveralls.io/github/Fdawgs/node-poppler?branch=master) [![code style: prettier](https://img.shields.io/badge/code_style-prettier-ff69b4.svg?style=flat-square)](https://github.com/prettier/prettier)
 
 > Asynchronous node.js wrapper for the Poppler PDF rendering library