Added badges

Author: Nyholm

README.md

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 # PSR-7 Multipart Stream Builder
 
 [![Latest Version](https://img.shields.io/github/release/php-http/multipart-stream-builder.svg?style=flat-square)](https://github.com/php-http/multipart-stream-builder/releases)
-[![Software License](https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat-square)](LICENSE)
+[![Build Status](https://img.shields.io/travis/php-http/multipart-stream-builder.svg?style=flat-square)](https://travis-ci.org/php-http/multipart-stream-builder)
+[![Code Coverage](https://img.shields.io/scrutinizer/coverage/g/php-http/multipart-stream-builder.svg?style=flat-square)](https://scrutinizer-ci.com/g/php-http/multipart-stream-builder)
+[![Quality Score](https://img.shields.io/scrutinizer/g/php-http/multipart-stream-builder.svg?style=flat-square)](https://scrutinizer-ci.com/g/php-http/multipart-stream-builder)
 [![Total Downloads](https://img.shields.io/packagist/dt/php-http/multipart-stream-builder.svg?style=flat-square)](https://packagist.org/packages/php-http/multipart-stream-builder)
 
 **A builder for Multipart PSR-7 Streams. The builder create streams independenly form any PSR-7 implementation.**