chor: remove appveyor yml and badge (#247)

Author: adampash

README.md

@@ -2,7 +2,7 @@
 
 # Mercury Parser - Extracting content from chaos
 
-[![CircleCI](https://circleci.com/gh/postlight/mercury-parser.svg?style=svg&circle-token=3026c2b527d3767750e767872d08991aeb4f8f10)](https://circleci.com/gh/postlight/mercury-parser) [![Build status](https://ci.appveyor.com/api/projects/status/bxwqp6mn8ijycqh4?svg=true)](https://ci.appveyor.com/project/adampash/mercury-parser) [![Greenkeeper badge](https://badges.greenkeeper.io/postlight/mercury-parser.svg)](https://greenkeeper.io/) [![Apache License][license-apach-badge]][license-apach] [![MITC License][license-mit-badge]][license-mit]
+[![CircleCI](https://circleci.com/gh/postlight/mercury-parser.svg?style=svg&circle-token=3026c2b527d3767750e767872d08991aeb4f8f10)](https://circleci.com/gh/postlight/mercury-parser) [![Greenkeeper badge](https://badges.greenkeeper.io/postlight/mercury-parser.svg)](https://greenkeeper.io/) [![Apache License][license-apach-badge]][license-apach] [![MITC License][license-mit-badge]][license-mit]
 
 [license-apach-badge]: https://img.shields.io/badge/License-Apache%202.0-blue.svg?style=flat-square
 [license-apach]: https://github.com/postlight/mercury-parser/blob/master/LICENSE-APACHE