Fork from cssom

新增功能点：

1. 支持重复定义属性
2. 修复CSS格式化的问题

# CSSOM

CSSOM.js is a CSS parser written in pure JavaScript. It also a partial implementation of [CSS Object Model](http://dev.w3.org/csswg/cssom/). 

    CSSOM.parse("body {color: black}")
    -> {
      cssRules: [
        {
          selectorText: "body",
          style: {
            0: "color",
            color: "black",
            length: 1
          }
        }
      ]
    }


## [Parser demo](http://nv.github.com/CSSOM/docs/parse.html)


To use it with Node.js or any other CommonJS loader:

    ➤ npm install css-parser