README.md in chinese_pinyin-0.4.2 vs README.md in chinese_pinyin-0.5.0

@@ -15,13 +15,14 @@
 
     require 'rubygems'
     require 'chinese_pinyin'
 
     Pinyin.t('中国')  => "zhong guo"
-    Pinyin.t('中国', '-') => "zhong-guo"
-    Pinyin.t('中国', '') => "zhongguo"
     Pinyin.t('你好world') => "ni hao world"
+    Pinyin.t('中国', splitter: '-') => "zhong-guo"
+    Pinyin.t('中国', splitter: '') => "zhongguo"
+    Pinyin.t('中国', tone: true) => "zhong1 guo2"
 
 Polyphone Issue
 ---------------
 
 use Words.dat to override default behavior.
@@ -30,10 +31,10 @@
 
     Pinyin.t('广州') => "yan zhou"
 
 add file Words.dat
 
-    广州|guang zhou
+    广州|guang3 zhou1
 
 set ENV['WORDS_FILE'] for Words.dat
 
     ENV['WORDS_FILE'] = "Words.dat path"
     Pinyin.t('广州') => "guang zhou"