how to show images in readme.md code example
Example 1: image in github readme
![Alt text](relative/path/to/img.jpg?raw=true "Title")
Example 2: how to add image in readme.md
![alt text](http://url/to/img.png)
![Alt text](relative/path/to/img.jpg?raw=true "Title")
![alt text](http://url/to/img.png)