hotoo/node-pinyin — pull request #12 by mozillazg (2013-09-22 13:34:07+00:00)
Title: 不处理字符串中的非中文字符

Before：
```javascript
> pinyin('中English')
[ [ 'zhōng' ],
[ 'E' ],
[ 'n' ],
[ 'g' ],
[ 'l' ],
[ 'i' ],
[ 's' ],
[ 'h' ] ]
```
After：
```javascript
> pinyin('中English')
[ [ 'zhōng' ], [ 'English' ] ]
```