docs: improve local hook install explanation (#2457)

* docs(hook): husky v5 installation

* docs(readme): update readme

Author: LuckJMG

README.md

@@ -93,27 +93,28 @@ npm install --save-dev @commitlint/config-conventional @commitlint/cli
 echo "module.exports = {extends: ['@commitlint/config-conventional']}" > commitlint.config.js
 ```
 
-To lint commits before they are created you can use Husky's 'commit-msg' hook.
+To lint commits before they are created you can use Husky's `commit-msg` hook:
 
-Install in your project `npm install husky --save-dev` or `yarn add -D husky`.
-
-After that, you can create a `.huskyrc` file or add to your `package.json` the following code for
+```sh
+# Install Husky v5
+npm install husky --save-dev
+# or
+yarn add husky --dev
 
-Husky V4:
+# Active hooks
+npx husky install
+# or
+yarn husky install
 
-```json
-{
-  "husky": {
-    "hooks": {
-      "commit-msg": "commitlint -E HUSKY_GIT_PARAMS"
-    }
-  }
-}
+# Add hook
+npx husky add .husky/commit-msg "npx --no-install commitlint --edit $1"
+# or
+yarn husky add .husky/commit-msg "yarn commitlint --edit $1"
 ```
 
-Husky V5
+If the file `.husky/commit-msg` already exists, you can edit the file and put this:
 
-```
+```sh
 # .husky/commit-msg
 # ...
 npx --no-install commitlint --edit $1

docs/guides-local-setup.md

@@ -10,9 +10,6 @@ Install `commitlint` and a `commitlint-config-*` of your choice as devDependency
 configure `commitlint` to use it.
 
 ```bash
-# Create a package.json if needed
-npm init
-
 # Install and configure if needed
 npm install --save-dev @commitlint/{cli,config-conventional}
 echo "module.exports = {extends: ['@commitlint/config-conventional']};" > commitlint.config.js
@@ -24,24 +21,32 @@ Alternatively the configuration can be defined in `.commitlintrc.js`, `.commitli
 
 Install `husky` as devDependency, a handy git hook helper available on npm.
 
-```bash
-npm install --save-dev husky
+```sh
+# Install Husky v5
+npm install husky --save-dev
+# or
+yarn add husky --dev
+
+# Active hooks
+npx husky install
+# or
+yarn husky install
+
+# Add hook
+npx husky add .husky/commit-msg "npx --no-install commitlint --edit $1"
+# or
+yarn husky add .husky/commit-msg "yarn commitlint --edit $1"
 ```
 
-This allows us to add [git hooks](https://git-scm.com/docs/githooks) directly into our `package.json` via the `husky.hooks` field.
-
-```json
-// package.json
-{
-  "husky": {
-    "hooks": {
-      "commit-msg": "commitlint -E HUSKY_GIT_PARAMS"
-    }
-  }
-}
-```
+If the file `.husky/commit-msg` already exists, you can edit the file and put this:
 
-Using `commit-msg` gives us exactly what we want: It is executed whenever a new commit is created. Passing husky's `HUSKY_GIT_PARAMS` to `commitlint` via the `-E|--env` flag directs it to the relevant edit file. `-e` would default to `.git/COMMIT_EDITMSG`.
+```sh
+# .husky/commit-msg
+# ...
+npx --no-install commitlint --edit $1
+# or
+yarn commitlint --edit $1
+```
 
 ## Test