Update README.md

Author: meili-bot

README.md

@@ -29,6 +29,7 @@
 
 ## Table of Contents <!-- omit in toc -->
 
+- [🎃 Hacktoberfest](#-hacktoberfest)
 - [📖 Documentation](#-documentation)
 - [🔧 Installation](#-installation)
 - [🎬 Getting started](#-getting-started)
@@ -37,6 +38,14 @@
 - [⚙️ Contributing](#️-contributing)
 - [📜 API resources](#-api-resources)
 
+## 🎃 Hacktoberfest
+
+It’s Hacktoberfest 2022 @Meilisearch
+
+[Hacktoberfest](https://hacktoberfest.com/) is a celebration of the open-source community. This year, and for the third time in a row, Meilisearch is participating in this fantastic event.
+
+You’d like to contribute? Don’t hesitate to check out our [contributing guidelines](./CONTRIBUTING.md).
+
 ## 📖 Documentation
 
 This readme contains all the documentation you need to start using this Meilisearch SDK.