HANYU is not TONGYONG, it was a mistake, this adds the HANYU pinyin

index.js

@@ -40,8 +40,12 @@ function processString (str, system) {
     throw new Error('Input contains non-Chinese characters')
   }
 
+  str = removeDiacritics(str).toUpperCase()
+
   // romanization system
-  str = romanizationSys[removeDiacritics(str).toUpperCase()][system]
+  if (system !== 'HANYU') {
+    str = romanizationSys[str][system]
+  }
 
   // titleCase
   str = str.charAt(0).toUpperCase() + str.slice(1, str.length).toLowerCase()

readme.md

@@ -18,7 +18,8 @@ romanize(name_in_zhTW, system)
 `system` String
   - `WG` (default) https://en.wikipedia.org/wiki/Wade%E2%80%93Giles
   - `MPS-II` https://en.wikipedia.org/wiki/Mandarin_Phonetic_Symbols_II
-  - `HANYU` https://en.wikipedia.org/wiki/Tongyong_Pinyin
+  - `TONGYONG` https://en.wikipedia.org/wiki/Tongyong_Pinyin
+  - `HANYU` https://en.wikipedia.org/wiki/Pinyin
 
 ## Examples
 
@@ -29,8 +30,11 @@ console.log(romanize('張懸'))
 console.log(romanize('張懸', 'MPS-II'))
 > Shiuan Jang
 
-console.log(romanize('張懸', 'HANYU'))
+console.log(romanize('張懸', 'TONGYONG'))
 > Syuan Jhang
+
+console.log(romanize('張懸', 'HANYU'))
+> Xuan Zhang
 ```
 
 ```javascript
@@ -40,8 +44,11 @@ console.log(romanize('秋木安'))
 console.log(romanize('秋木安', 'MPS-II'))
 > Mu-An Chiou
 
-console.log(romanize('秋木安', 'HANYU'))
+console.log(romanize('秋木安', 'TONGYONG'))
 > Mu-An Ciou
+
+console.log(romanize('秋木安', 'HANYU'))
+> Mu-An Qiu
 ```
 
 ```javascript
@@ -51,8 +58,11 @@ console.log(romanize('范姜峻宏'))
 console.log(romanize('范姜峻宏', 'MPS-II'))
 > Jiun-Hung Fan-Jiang
 
-console.log(romanize('范姜峻宏', 'HANYU'))
+console.log(romanize('范姜峻宏', 'TONGYONG'))
 > Jyun-Hong Fan-Jiang
+
+console.log(romanize('范姜峻宏', 'HANYU'))
+> Jun-Hong Fan-Jiang
 ```
 
 ## Data Sources