fixed the go lint issue

Add method to support convert image to pixelASCII matrix

remove useless code

Update README.md

Update README.md

Update README.md

Update README.md

Update README.md

add some examples

update docker image

update the logic

fixed the lint issue

reformat the code

add the mock terminal

remove uesless files

Refactor the code to match the oop mode for easy mock and test

add the fit options to scale the image to fit the screen

Update README.md

Update the README.md

Fxied the fetched wrong image width and height issue