不断更新Markdown使用过程中的一些Tips，供参考！
1. Markdown中的注释
参考：https://stackoverflow.com/questions/4823468/comments-in-markdown
That is:
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[comment]: <> (This is a comment, it will not be included)
[comment]: <> (in the output file unless you use it in)
[comment]: <> (a reference style link.)
Or you could go further:
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[//]: <> (This is also a comment.)
To improve platform compatibility (and to save one keystroke) it is also possible to use # (which is a legitimate hyperlink target) instead of <>:
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[//]: # (This may be the most platform independent comment)
I use standard HTML tags, like
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<!---
your comment goes here
and here
-->
