Extend introduction docs (#361)

README.md

@@ -10,7 +10,7 @@
 <br/>
 
 Tournament system meant to be easy to use.
-Bracket is written in async Python (with [FastAPI](https://fastapi.tiangolo.com)) and Next.js as frontend using the [Mantine](https://mantine.dev/) library.
+Bracket is written in async Python (with [FastAPI](https://fastapi.tiangolo.com)) and [Next.js](https://nextjs.org/) as frontend using the [Mantine](https://mantine.dev/) library.
 
 It has the following features: 
 - Supports **single elimination, round-robin and swiss** formats.

docs/docs/intro.md

@@ -4,6 +4,38 @@ sidebar_position: 1
 
 # Introduction
 
-Bracket is a tournament system meant to be easy to use.
-Bracket is written in async Python (with FastAPI) and Next.js as frontend using the
-[Mantine](https://mantine.dev/) library.
+[Bracket](https://github.com/evroon/bracket) is a tournament system meant to be easy to use. Bracket
+is written in async Python (with [FastAPI](https://fastapi.tiangolo.com)) and
+[Next.js](https://nextjs.org/) as frontend using the [Mantine](https://mantine.dev/) library.
+
+## Overview of features
+It has the following features:
+- Supports **single elimination, round-robin and swiss** formats.
+- **Build your tournament structure** with multiple stages that can have multiple groups/brackets in
+  them.
+- **Drag-and-drop matches** to different courts or reschedule them to another start time.
+- Various **dashboard pages** are available that can be presented to the public, customized with a
+  logo.
+- Create/update **teams**, and add players to **teams**.
+- Create **multiple clubs**, with **multiple tournaments** per club.
+- **Swiss tournaments** can be handled dynamically, with automatic scheduling of matches.
+
+## Why does this exist?
+There are plenty of tournament systems to be found online. So why does Bracket exist?
+
+**Firstly**, there are **no complete open-source tournament systems to be found** [on
+github](https://github.com/search?q=tournament%20system&type=repositories). Let me know if you find
+one, I will list it here as alternative to Bracket. Furthermore, the closed-source tournament
+systems that can be found online are typically payware, and **quite expensive**.
+
+**Secondly**, there is a **lack of tournament systems that support Swiss tournaments**. There are a
+few that exist, but they're typically quite ancient projects. Furthermore, AFAIK the Swiss
+tournament systems that exist usually only support Swiss, no other types of tournament elements
+(round-robin, elimination etc.). That is quite a limitation when you want to host a tournament that
+starts with Swiss and determines a winner based on a knockoff (elimination) stage.
+
+**Finally**, I developed this project to learn more about Next.js and apply my Python (e.g. FastAPI)
+experience to a project with a real purpose.
+
+## Quickstart
+To get started, follow the steps described in [quickstart](getting-started/quickstart.md)