1.斜体和粗体
Italics
Bold
both italics and bold
on the outside
2.标题
Header one
Header two
Header three
Header four
Header five
Header six
3.链接
a.inline link
Search for it.Visit Baidu
Again.You're really, really going to want to see this.
###The Latest News from the BBC
b.regference link 适用于该链接在文中出现了多次，这个markdown语法在github中居然实现不了
Here's [a link to something else][another place].
Here's [yet another link][another-link].
And now back to [the first link][another place].
[another place]: http://www.github.com
[another-link]: http://www.google.com
4.添加图片