message: fix(badge): fix appveyor badge
diff: > Your favorite rust -> wasm workflow tool!
  [![Build Status](https://travis-ci.org/rustwasm/wasm-pack.svg?branch=master)](https://travis-ci.org/rustwasm/wasm-pack)
  -[![Build status](https://ci.appveyor.com/api/projects/status/7jjuo5wewu9lyyfi?svg=true)](https://ci.appveyor.com/project/rustwasm/wasm-pack)
  +[![Build status](https://ci.appveyor.com/api/projects/status/iv1qtnqtv168ef8h?svg=true)](https://ci.appveyor.com/project/ashleygwilliams/wasm-pack-071k0)
  +
  This tool seeks to be a one-stop shop for building and working with rust-
  generated WebAssembly that you would like to interop with JavaScript, in the
  