[纪秀峰]:auto create TAGS if `tags-file-name' or `tags-table-list' is not nil and they share the same parent directory.
受影响的文件:
    ctags-update.el
[纪秀峰]:fix version
受影响的文件:
    ctags-update.el
[纪秀峰]:auto create TAGS if `tags-file-name' or `tags-table-list' is not nil and they share the same parent directory.
 fix comment
受影响的文件:
    ctags-update.el
[纪秀峰]:update readme
add info about ctags-update
受影响的文件:
    readme.org
    ctags-update.el
[纪秀峰]:update readme
受影响的文件:
    readme.org
    readme.md
[纪秀峰]:update readme
[纪秀峰]:update readme
受影响的文件:
    readme.md