Add coveralls badge (#3477)

README.md

@@ -8,6 +8,7 @@ _Simple, scalable state management._
 [![OpenCollective](https://opencollective.com/mobx/backers/badge.svg)](docs/backers-sponsors.md#backers)
 [![OpenCollective](https://opencollective.com/mobx/sponsors/badge.svg)](docs/backers-sponsors.md#sponsors)
 [![Discuss on Github](https://img.shields.io/badge/discuss%20on-GitHub-orange)](https://github.com/mobxjs/mobx/discussions)
+[![Coverage Status](https://coveralls.io/repos/github/mobxjs/mobx/badge.svg?branch=main)](https://coveralls.io/github/mobxjs/mobx?branch=main)
 [![View changelog](https://img.shields.io/badge/changelogs.xyz-Explore%20Changelog-brightgreen)](https://changelogs.xyz/mobx)
 
 ---

packages/mobx-react-lite/README.md

@@ -1,9 +1,8 @@
 # mobx-react-lite
 
-[![CircleCI](https://circleci.com/gh/mobxjs/mobx-react-lite.svg?style=svg)](https://circleci.com/gh/mobxjs/mobx-react-lite)[![Coverage Status](https://coveralls.io/repos/github/mobxjs/mobx-react-lite/badge.svg)](https://coveralls.io/github/mobxjs/mobx-react-lite)[![NPM downloads](https://img.shields.io/npm/dm/mobx-react-lite.svg?style=flat)](https://npmjs.com/package/mobx-react-lite)[![Minzipped size](https://img.shields.io/bundlephobia/minzip/mobx-react-lite.svg)](https://bundlephobia.com/result?p=mobx-react-lite)
-
-[![TypeScript](https://badges.frapsoft.com/typescript/code/typescript.svg?v=101)](https://github.com/ellerbrock/typescript-badges/)[![code style: prettier](https://img.shields.io/badge/code_style-prettier-ff69b4.svg)](https://github.com/prettier/prettier)
-
+[![CircleCI](https://circleci.com/gh/mobxjs/mobx-react-lite.svg?style=svg)](https://circleci.com/gh/mobxjs/mobx-react-lite)
+[![Coverage Status](https://coveralls.io/repos/github/mobxjs/mobx-react-lite/badge.svg)](https://coveralls.io/github/mobxjs/mobx-react-lite)
+[![NPM downloads](https://img.shields.io/npm/dm/mobx-react-lite.svg?style=flat)](https://npmjs.com/package/mobx-react-lite)[![Minzipped size](https://img.shields.io/bundlephobia/minzip/mobx-react-lite.svg)](https://bundlephobia.com/result?p=mobx-react-lite)
 [![Discuss on Github](https://img.shields.io/badge/discuss%20on-GitHub-orange)](https://github.com/mobxjs/mobx/discussions)
 [![View changelog](https://img.shields.io/badge/changelogs.xyz-Explore%20Changelog-brightgreen)](https://changelogs.xyz/mobx-react-lite)
 

packages/mobx-react/README.md

@@ -3,9 +3,6 @@
 [![CircleCI](https://circleci.com/gh/mobxjs/mobx-react.svg?style=svg)](https://circleci.com/gh/mobxjs/mobx-react)
 [![CDNJS](https://img.shields.io/cdnjs/v/mobx-react.svg)](https://cdnjs.com/libraries/mobx-react)
 [![Minzipped size](https://img.shields.io/bundlephobia/minzip/mobx-react.svg)](https://bundlephobia.com/result?p=mobx-react)
-
-[![TypeScript](https://badges.frapsoft.com/typescript/code/typescript.svg?v=101)](https://github.com/ellerbrock/typescript-badges/)[![code style: prettier](https://img.shields.io/badge/code_style-prettier-ff69b4.svg)](https://github.com/prettier/prettier)
-
 [![Discuss on Github](https://img.shields.io/badge/discuss%20on-GitHub-orange)](https://github.com/mobxjs/mobx/discussions)
 [![View changelog](https://img.shields.io/badge/changelogs.xyz-Explore%20Changelog-brightgreen)](https://changelogs.xyz/mobx-react)