结果有误

[williamherry]

钶字的结果不对

3.1.2 :002 > require 'ruby-pinyin'
 => true 
3.1.2 :003 > PinYin.of_string("柯")
 => ["ke"] 
3.1.2 :004 > PinYin.of_string("钶")
 => ["e"] 
3.1.2 :005 > PinYin.of_string("钶", :ascii)
 => ["e1"] 
3.1.2 :006 > PinYin.of_string("钶", :unicode)
 => ["ē"] 
3.1.2 :007 >