add badges to README

Author: mehm8128

README.md

@@ -1,9 +1,15 @@
 # queryByRole
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+[![CI on main](https://github.com/mehm8128/query-by-role/actions/workflows/main.yml/badge.svg)](https://github.com/mehm8128/query-by-role/actions/workflows/main.yml)
+[![NPM Version](https://img.shields.io/npm/v/query-by-role)](https://www.npmjs.com/package/query-by-role)
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
+
 This is a implementation of `queryByRole` for browser.
 
 ## Usage
 
 You'll get the button whose accessible name is "Click!" from window with the following code.
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 ```ts
 const targetWindow = createTargetWindow(window);
 const buttonRoleElements = targetWindow.queryByRole("button", {