docs: Improve instructions on README

Author: jpedroschmitz

README.md

@@ -1,21 +1,73 @@
 # @rocketseat/commitlint-config
 
+<p>
+  <img src="https://img.shields.io/npm/v/@rocketseat/commitlint-config?style=flat-square&color=8257E5&labelColor=121214" alt="npm version" />
+  <img alt="License" src="https://img.shields.io/github/license/rocketseat/commitlint-config?style=flat-square&color=8257E5&labelColor=121214">
+</p>
+
 Shareable [`commitlint`](https://github.com/conventional-changelog/commitlint) config used by Rocketseat.
 
-## Getting started
+## Install
 
-Installing:
+You can install it with npm or Yarn.
 
 ```sh
 # npm
-npm i -D @rocketseat/commitlint-config
+npm i -D @rocketseat/commitlint-config @commitlint/cli
+
+# Yarn
+yarn add -D @rocketseat/commitlint-config @commitlint/cli
+```
+
+## Usage
+
+After installing it, apply the config to `commitlint` by running the following command:
 
-# yarn
-yarn add -D @rocketseat/commitlint-config
+```sh
+echo "module.exports = { extends: ['@rocketseat/commitlint-config'] };" > .commitlintrc.js
 ```
 
-Apply the config to `commitlint`:
+## Bonus
+
+To lint commits before they are created, install Husky and use the 'commit-msg' hook.
 
 ```sh
-echo "module.exports = {extends: ['@rocketseat/commitlint-config']};" > commitlint.config.js
+# Npm
+npm i -D husky
+
+# Yarn
+yarn add -D husky
+```
+
+After that, you can create a `.huskyrc` file or add to your `package.json` the following code for
+
+Husky v4:
+
+```json
+{
+  "husky": {
+    "hooks": {
+      "commit-msg": "commitlint -E HUSKY_GIT_PARAMS"
+    }
+  }
+}
+```
+
+Husky v5:
+
 ```
+# .husky/commit-msg
+# ...
+npx --no-install commitlint --edit $1
+# or
+yarn commitlint --edit $1
+```
+
+## Version Support
+
+- Node.js [LTS](https://github.com/nodejs/LTS#lts-schedule) `>= 10.21.0`
+- git `>= 2.13.2`
+
+## License
+
+MIT License © [Rocketseat](https://github.com/Rocketseat)