how to add image in md code example
Example 1: how to insert an image in markdown
![image info](./pictures/image.png)
Example 2: markdown embed image
![Image of Yaktocat](https://octodex.github.com/images/yaktocat.png)
Example 3: how to add image in readme.md
![alt text](http://url/to/img.png)
Example 4: how to add image in readme.md
![alt text](https://github.com/[username]/[reponame]/blob/[branch]/image.jpg?raw=true)