pinyin.txt add line comments

CHANGELOG.md

@@ -5,6 +5,7 @@
 
 * Fix some pinyin: 罗 via [468ffaa8](https://github.com/mozillazg/pinyin-data/commit/468ffaa8eb678637c7565a02e6836255bd0df06c) .
 * Support Chinese that in PUA([Private Use Area](https://en.wikipedia.org/wiki/Private_Use_Areas>)) via [#2](https://github.com/mozillazg/pinyin-data/pull/2).
+* pinyin.txt add line comments that startswith `#`.
 
 
 ## 0.2.0 (2016-07-19):

README.md

@@ -5,7 +5,11 @@
 
 ## 数据介绍
 
-数据格式：`{code point}: {pinyins}  # {hanzi}` （示例：`U+4E2D: zhōng,zhòng  # 中`）
+数据格式：
+
+* 格式：`{code point}: {pinyins}  # {hanzi}` （示例：`U+4E2D: zhōng,zhòng  # 中`）
+* 以 `#` 开头的行是注释
+
 
 [Unihan Database][unihan] 数据版本：
 > Date: 2016-06-01 07:01:48 GMT [JHJ]       

merge_unihan.py

@@ -93,4 +93,6 @@ def extend_pinyins(old_map, new_map, only_no_exists=False):
     assert set(overwrite_pinyin_map.keys()) - code_set == set()
     assert set(pua_pinyin_map.keys()) - code_set == set()
     with open('pinyin.txt', 'w') as fp:
+        fp.write('# version: 0.3.0\n')
+        fp.write('# source: https://github.com/mozillazg/pinyin-data\n')
         save_data(new_pinyin_map, fp)

pinyin.txt

@@ -1,3 +1,5 @@
+# version: 0.3.0
+# source: https://github.com/mozillazg/pinyin-data
 U+3007: líng  # 〇
 U+3400: qiū  # 㐀
 U+3401: tiàn  # 㐁