chore(readme): update appveyor badge and fix image alt text

Author: acburdine

README.md

@@ -1,9 +1,9 @@
 # Ghost-CLI
 
-[![ghost-cli npm](https://travis-ci.org/TryGhost/Ghost-CLI.svg?branch=master)](https://travis-ci.org/TryGhost/Ghost-CLI)
-[![Build status](https://ci.appveyor.com/api/projects/status/nsq2yxgbgigm0d96?svg=true)](https://ci.appveyor.com/project/acburdine/ghost-cli)
+[![TravisCI Status](https://travis-ci.org/TryGhost/Ghost-CLI.svg?branch=master)](https://travis-ci.org/TryGhost/Ghost-CLI)
+[![Appveyor Status](https://ci.appveyor.com/api/projects/status/drkas41sgvbdn9ca?svg=true)](https://ci.appveyor.com/project/acburdine/ghost-cli)
 [![Coverage Status](https://coveralls.io/repos/github/TryGhost/Ghost-CLI/badge.svg?branch=master)](https://coveralls.io/github/TryGhost/Ghost-CLI?branch=master)
-[![npm](https://img.shields.io/npm/v/ghost-cli.svg)](https://npmjs.com/package/ghost-cli/)
+[![npm version](https://img.shields.io/npm/v/ghost-cli.svg)](https://npmjs.com/package/ghost-cli/)
 [![ghost-cli dependencies](https://david-dm.org/TryGhost/Ghost-CLI.svg)](https://david-dm.org/TryGhost/Ghost-CLI)
 
 > Just a CLI manager (for a blogging platform)