Add some more badges now that a package exists.

README.md

@@ -12,6 +12,9 @@ The PSR7 Tweeter
 [![Build Status](https://travis-ci.org/jimlind/pie7o.png?branch=master)](https://travis-ci.org/jimlind/pie7o)
 [![Coverage Status](https://coveralls.io/repos/jimlind/pie7o/badge.svg?branch=master&service=github)](https://coveralls.io/github/jimlind/pie7o?branch=master)
 [![Code Climate](https://codeclimate.com/github/jimlind/pie7o/badges/gpa.svg)](https://codeclimate.com/github/jimlind/pie7o)
+[![Latest Stable Version](https://poser.pugx.org/jimlind/pie7o/v/stable)](https://packagist.org/packages/jimlind/pie7o)
+[![Total Downloads](https://poser.pugx.org/jimlind/pie7o/downloads)](https://packagist.org/packages/jimlind/pie7o)
+[![License](https://poser.pugx.org/jimlind/pie7o/license)](https://packagist.org/packages/jimlind/pie7o)
 
 #### Documentation