Translate chinese hanzi to pinyin.
The dict is borrowed from http://github.com/fayland/perl-lingua-han/tree/master/Lingua-Han-PinYin/
sudo gem install chinese_pinyin
require 'rubygems'
require 'chinese_pinyin'
Pinyin.t('**') => "zhong guo"
Pinyin.t('**', '-') => "zhong-guo"
Pinyin.t('**', '') => "zhongguo"
Pinyin.t('你好world') => "ni hao world"
use Words.dat to override default behavior.
by default
Pinyin.t('广州') => "yan zhou"
add file Words.dat
广州|guang zhou
set ENV['WORDS_FILE'] for Words.dat
ENV['WORDS_FILE'] = "Words.dat path"
Pinyin.t('广州') => "guang zhou"