当我在sublime 使用OmniMarkupPreviewer预览markdown文件时，报了下面的错误
Error: 404 Not Found
Sorry, the requested URL'http://127.0.0.1:51005/view/28'caused an error:
'buffer_id(28) is not valid (closed or unsupported file format)'
**NOTE:** If you run multiple instances of Sublime Text, you may want to adjust
the `server_port` option in order to get this plugin work again.
经过查找资料，找到了解决办法
Sublime Text > Preferences > Package Settings > OmniMarkupPreviewer > Settings - User
按上面那个顺序打开配置文件，把下面的代码粘贴进去
{
"renderer_options-MarkdownRenderer": {
"extensions": ["tables", "fenced_code", "codehilite"]
}
}
