LICENSE + Update README (#57)

* add MIT license
* update README

LICENSE

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+Copyright (c) 2024 Michael Škrášek
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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 # Clean Architecture Backend
 The **Clean Architecture** Backend developed with **Domain-Driven Design** and **CQRS**. 
 This is a backend for a demonstration application *"TeamUp"* (team managment application) as part of my **Master's Thesis** at [BUT FIT](https://www.fit.vut.cz/.en).
+
+### Run
+
+```bash
+# with dotnet 8 sdk
+dotnet run --project src/TeamUp.Api
+```
+By default, the application launches at *https://localhost:7089* by default, to change the port, change the `applicationUrl` value in `src/TeamUp.Api/Properties/launchSettings.json`.
+
+#### Database
+By default, the application expects postgres database instance running at localhost (port 5432), and logs in using `postgres` username and `devpass` password. To change that, change connection string in `Database` section in `src/TeamUp.Api/appsettings.json`.
+
+Such instance can be launched using the [scripts/rundb.ps1](scripts/rundb.ps1) script.
+
+#### Client
+By default, the application expects the client app ([frontend](https://github.com/skrasekmichael/ModularInformationSystemFrontend)) at *https://localhost:7229*, to change that, change the `Url` value in `Client` section in `src/TeamUp.Api/appsettings.json`.