Update eslint-plugin README

Author: utarwyn

eslint-plugin/README.md

@@ -7,8 +7,8 @@ An ESLint plugin which provides JavaScript rules of the ecoCode project.
 
 > ⚠️ This plugin is in a very early stage and need improvements. Any contribution will be appreciated.
 
-📥 Usage
---------
+🚀 Getting started
+------------------
 
 ### Installation
 
@@ -44,17 +44,31 @@ Add `@ecocode` to the `plugins` section of your `.eslintrc`, followed by rules c
 }
 ```
 
-Rules
------
+🌿 Use with our SonarQube plugin
+--------------------------------
+
+If you are already using ESLint results for your SonarQube analysis, there are no additional steps! Otherwise:
+
+- Use **"-f json"** option of ESLint to export results in a JSON format.\
+  _example in a script:_ `eslint . -f json -o report.json`
+- Add the path of the generated report to SonarQube property **"sonar.eslint.reportPaths"**.\
+  _example in sonar-project.properties:_ `sonar.eslint.reportPaths=report.json`
+
+Check [SonarQube documentation](https://docs.sonarqube.org/8.9/analyzing-source-code/importing-external-issues/importing-third-party-issues/)
+to have more information about the integration.
+
+🔨 Rules
+--------
 
 <!-- begin auto-generated rules list -->
 
 ⚠️ Configurations set to warn in.\
 ✅ Set in the `recommended` configuration.
 
-| Name                                                                           | Description                                   | ⚠️ |
+| Name | Description | ⚠️ |
 | :----------------------------------------------------------------------------- | :-------------------------------------------- | :- |
-| [no-multiple-access-dom-element](docs/rules/no-multiple-access-dom-element.md) | Disallow multiple access of same DOM element. | ✅  |
+| [no-multiple-access-dom-element](docs/rules/no-multiple-access-dom-element.md) | Disallow multiple access of same DOM
+element. | ✅ |
 
 <!-- end auto-generated rules list -->