Markdown is a simple way to format plain text without a text editor. Here's what you can do with Markdown:
# This is an <h1> tag
## This is an <h2> tag
###### This is an <h6> tag
*This text will be italic*
_This will also be italic_
**This text will be bold**
__This will also be bold__
_You **can** combine them_
* Item 1
* Item 2
* Item 2a
* Item 2b
1. Item 1
1. Item 2
1. Item 3
1. Item 3a
1. Item 3b
![GitHub Logo](/images/logo.png)
Format: ![Alt Text](url)
http://www.example.com (will be automatically converted to a link).
[A website](http://www.example.com)