message: Fix AppVeyor badge URL
diff: @@ -4,7 +4,7 @@ Learn more at http://doc.crates.io/
  ## Code Status
  [![Build Status](https://travis-ci.org/rust-lang/cargo.svg?branch=master)](https://travis-ci.org/rust-lang/cargo)
  -[![Build Status](https://ci.appveyor.com/api/projects/status/jnh54531mpidb2c2?svg=true)](https://ci.appveyor.com/project/alexcrichton/cargo)
  +[![Build Status](https://ci.appveyor.com/api/projects/status/github/rust-lang/cargo?branch=master&svg=true)](https://ci.appveyor.com/project/rust-lang-libs/cargo)
  ## Installing Cargo
  