documentation: new section "why i wrote this library"

readme.md

@@ -23,6 +23,10 @@ It provides a cross-plateform framework for building web applications on top of
 
 SimpleW is lightweight, easy to integrate, fast, minimal footprint, and only one dependency _(Newtonsoft.Json, will be remove in futur release)_.
 
+If you wonder [why i wrote this library](#why-i-wrote-this-library) and what are [my needs](#so-my-needs).
+
+Then, jump to the summary and see if it could fit yours. 
+
 # Summary
 
 - [Installation](#installation)
@@ -1853,6 +1857,44 @@ namespace Sample {
 }
 ```
 
-License
----
+## Why i wrote this library ?
+
+To my opinion, modern web application architecture is based on a REST API which acts as a contract between 2 parts :
+- backend (only one) : developer feels free to use/change the technology he wants (C#, Go, Rust, PHP...) but must provide and follow the REST API.
+- frontend (one or many) : developer feels free to use/change the technology he wants (SPA/Vue, SPA/React, Mobile/Android...) but must consume and follow the REST API.
+
+### So, my needs 
+
+#### Frontend
+
+I prefer [SPA](https://en.wikipedia.org/wiki/Single-page_application) using [Vite](https://vitejs.dev/), [Vue](https://vuejs.org) and [Vuetify](https://vuetifyjs.com).
+
+#### Backend
+
+- written in C#, the language i 😍.
+- must be easy to integrate, lightweight with a minimal footprint.
+- must support Routing, GET/POST, Websocket, CORS.
+- don't need to have template engine as i write frontend in a separated project.
+- must serve static files (static files are the result of my `npm run build` vite project)
+
+
+### The existings projects
+- [ASP.NET Core](https://learn.microsoft.com/fr-fr/aspnet/core/?view=aspnetcore-8.0) :
+    - too many features i don't need, i don't want _(Razor, Blazor...)_.
+    - overcomplicated when i want to customize some behaviour
+    - too heavy, sometimes i have a very small API.
+- [IIS](https://iis.net/) an old _« usine à gaz »_ on Windows, Kestrel and SignalR the same on Linux/Mac.
+- [EmbedIO](https://github.com/unosquare/embedio) : long time v2 user, i don't like the rewrite of the v3. Moreover, it uses the old Microsoft `HttpListener` and the `websocket-sharp` alternative was not perfect.
+- [GenHtt](https://genhttp.org) : feels promising but i was in the process of writting my own.
+- __[NetCoreServer](https://github.com/chronoxor/NetCoreServer)__ : WHOA 😮 ! Fast, simple, extremly well design, extendable BUT no RESTAPI... Wait, what if i use the whole `OnReceivedRequest()` event to do exactly what i want 🤔
+
+### SimpleW
+
+SimpleW is born after adding basic RESTAPI features to the `OnReceivedRequest()` of [NetCoreServer](https://github.com/chronoxor/NetCoreServer).
+
+After 2 years grade production, SimpleW serves many APIs, gains some cool features but still always lightweight and easy to integrate.
+
+Feel free to report issue.
+
+# License
 This library is under the MIT License.