github add image to readme.md code example

Example 1: README.md image

If you want to embed images, this is how you do it:

![Image of Yaktocat](https://octodex.github.com/images/yaktocat.png)

Example 2: github adding images to readme

![alt text](http://url/to/img.png)

Example 3: github add image to readme.md

![GitHub Logo](/images/logo.png)
Format: ![Alt Text](url)