Add badges.

Author: octet-stream

readme.md

@@ -2,6 +2,10 @@
 
 Encode `FormData` content into the `multipart/form-data` format
 
+[![Code Coverage](https://codecov.io/github/octet-stream/form-data-encoder/coverage.svg?branch=master)](https://codecov.io/github/octet-stream/form-data-encoder?branch=master)
+[![CI](https://github.com/octet-stream/form-data-encoder/workflows/CI/badge.svg)](https://github.com/octet-stream/form-data-encoder/actions/workflows/ci.yml)
+[![ESLint](https://github.com/octet-stream/form-data-encoder/workflows/ESLint/badge.svg)](https://github.com/octet-stream/form-data-encoder/actions/workflows/eslint.yml)
+
 ## Usage
 
 1. To start the encoding process, you need to create a new Encoder instance with the FormData you want to encode: