fix coveralls + hardlink note

readme.md

@@ -2,7 +2,7 @@
 
 [![npm](https://img.shields.io/npm/v/@seangenabe/shadow.svg?style=flat-square)](https://www.npmjs.com/package/@seangenabe/shadow)
 [![Travis Build Status](https://img.shields.io/travis/seangenabe/shadow/master.svg?label=travis&style=flat-square)](https://travis-ci.org/seangenabe/@seangenabe/shadow)
-[![AppVeyor Build Status](https://img.shields.io/appveyor/ci/seangenabe/shadow/master.svg?label=appveyor&style=flat-square)](https://ci.appveyor.com/project/seangenabe/@seangenabe/shadow)
+[![AppVeyor Build Status](https://img.shields.io/appveyor/ci/seangenabe/shadow/master.svg?label=appveyor&style=flat-square)](https://ci.appveyor.com/project/seangenabe//shadow)
 [![Coveralls](https://img.shields.io/coveralls/github/seangenabe/shadow.svg?style=flat-square)](https://coveralls.io/github/seangenabe/shadow)
 [![Dependency Status](https://img.shields.io/david/seangenabe/shadow.svg?style=flat-square)](https://david-dm.org/seangenabe/@seangenabe/shadow)
 [![devDependency Status](https://img.shields.io/david/dev/seangenabe/shadow.svg?style=flat-square)](https://david-dm.org/seangenabe/@seangenabe/shadow#info=devDependencies)
@@ -38,6 +38,10 @@ Options:
 * cwd, dest, pattern - same as above
 * m|mode - copy mode
 
+## What happened to `hardlink`?
+
+This package is modified from `hardlink`'s code and is a superset of its functionality.
+
 ## Related
 
 * [copy-newer](https://github.com/seangenabe/copy-newer)