Issue #15: Add the spinners.svg and update the README.md

[ClarkChiu]

Description of new feature, or changes

Add the spinners.svg and update the README.md

Checklist

• [x] Your branch is up-to-date with the base branch
• [ ] You've included at least one test if this is a new feature
• [ ] All tests are passing

Related Issues and Discussions

Fixes #15

People to notify

[phanirithvij]

@ClarkChiu if I may know, how did you generate the svg?