Added bithound badge.

Author: neogeek

README.md

@@ -1,5 +1,6 @@
 [![](https://api.travis-ci.org/neogeek/doxdox.svg)](https://travis-ci.org/neogeek/doxdox)
 [![](https://david-dm.org/neogeek/doxdox.svg?style=flat)](https://david-dm.org/neogeek/doxdox)
+[![bitHound Score](https://www.bithound.io/github/neogeek/doxdox/badges/score.svg)](https://www.bithound.io/github/neogeek/doxdox)
 [![](http://img.shields.io/npm/v/doxdox.svg?style=flat)](https://www.npmjs.org/package/doxdox)
 
 # doxdox