Merge pull request #41 from curbengh/badge

docs(readme): add npm link and fix appveyor badge

Author: segayuu

README.md

@@ -1,6 +1,11 @@
 # hexo-fs
 
-[![Build Status](https://travis-ci.org/hexojs/hexo-fs.svg?branch=master)](https://travis-ci.org/hexojs/hexo-fs)  [![NPM version](https://badge.fury.io/js/hexo-fs.svg)](http://badge.fury.io/js/hexo-fs) [![Coverage Status](https://img.shields.io/coveralls/hexojs/hexo-fs.svg)](https://coveralls.io/r/hexojs/hexo-fs?branch=master) [![Build status](https://ci.appveyor.com/api/projects/status/wift3c57kei3ylq4/branch/master?svg=true)](https://ci.appveyor.com/project/tommy351/hexo-fs/branch/master) [![dependencies Status](https://david-dm.org/hexojs/hexo-fs/status.svg)](https://david-dm.org/hexojs/hexo-fs) [![devDependencies Status](https://david-dm.org/hexojs/hexo-fs/dev-status.svg)](https://david-dm.org/hexojs/hexo-fs?type=dev)
+[![Build Status](https://travis-ci.org/hexojs/hexo-fs.svg?branch=master)](https://travis-ci.org/hexojs/hexo-fs)
+[![NPM version](https://badge.fury.io/js/hexo-fs.svg)](https://www.npmjs.com/package/hexo-fs)
+[![Coverage Status](https://img.shields.io/coveralls/hexojs/hexo-fs.svg)](https://coveralls.io/r/hexojs/hexo-fs?branch=master)
+[![Build status](https://ci.appveyor.com/api/projects/status/github/hexojs/hexo-fs?svg=true)](https://ci.appveyor.com/project/tommy351/hexo-fs/branch/master)
+[![dependencies Status](https://david-dm.org/hexojs/hexo-fs/status.svg)](https://david-dm.org/hexojs/hexo-fs)
+[![devDependencies Status](https://david-dm.org/hexojs/hexo-fs/dev-status.svg)](https://david-dm.org/hexojs/hexo-fs?type=dev)
 
 File system module for [Hexo].