Update README.md (#255)

Author: axunonb

README.md

@@ -1,8 +1,8 @@
-<img src="logo-volleyball-league.png" width="100" alt="Logo">
+![Logo](logo-volleyball-league_100x100.png)
 
 # Volleyball League Platform Library
 
-![GitHub release (latest by date including pre-releases)](https://img.shields.io/github/v/release/axuno/volleyball-league?include_prereleases)  [![build](https://github.com/axuno/Volleyball-League/workflows/build/badge.svg)](https://github.com/axuno/Volleyball-League/actions?query=workflow%3Abuild)  ![GitHub](https://img.shields.io/github/license/axuno/volleyball-league)
+[![GitHub release (latest by date including pre-releases)](https://img.shields.io/github/v/release/axuno/volleyball-league?include_prereleases)](https://github.com/axuno/Volleyball-League/releases)  [![build](https://github.com/axuno/Volleyball-League/workflows/build/badge.svg)](https://github.com/axuno/Volleyball-League/actions?query=workflow%3Abuild)  [![GitHub](https://img.shields.io/github/license/axuno/volleyball-league)](https://github.com/axuno/Volleyball-League/blob/main/LICENSE)
 
 ## What is it?
 Volleyball League is a platform that brings everything necessary to organize and to run a league.
@@ -36,9 +36,9 @@ This is the 4th generation of the software developed over the last 20 years and
 
  ## Technology
 
-  * ASP.NET 6.0 web-development framework
+  * ASP.NET 8.0 web-development framework
   * C# programming language
-  * Microsoft SQL-Server 2016+ database is currently implemented. [See supported databases](https://www.llblgen.com/Pages/specifications.aspx)
+  * Microsoft SQL-Server 2019+ database is currently implemented. [See supported databases](https://www.llblgen.com/Pages/specifications.aspx)
   * Integrates Bootstrap 5
   * Using plain vanilla javascript (no dependency on jQuery)
 
@@ -50,13 +50,13 @@ The platform software is Open Source under the [MIT license](LICENSE)
 
   There is a [live website](https://volleyball-liga.de/) running the platform software.
 
-## Development demo website
+## Local Demo Website
 
 ### Database installation
 
 Before running the `League.Demo` project for the first time, the MSSQL databases must be installed. 
 
-A backup of the two demo databases is located in `League.Demo/Seed/Demo-Db.zip`. Restore the databases to your local MSSQL Server (Express) instance. Then adjust the connection string for the server in `Credentials.Development.json`.
+A backup of the two demo databases is located in `League.Demo/Seed/Demo-Db.zip`. Restore the databases to your local MSSQL Server (Express or Local) instance. Then adjust the connection string for the server in `Credentials.Development.json`.
 
 The default database names are `TestOrg` and `OtherOrg`. You may change these names, but then update the `DbContext/Catalog` name in `Tenant.TestOrg.Development.config` and  `Tenant.OtherOrg.Development.config` accordingly.
 
@@ -72,7 +72,9 @@ The default database names are `TestOrg` and `OtherOrg`. You may change these na
   * Username: demo
   * Email: demo@axuno.net
   * Password: demodemo
-  
+ 
+ You cannot use the credential other than the demo user to log in to the demo tenants.
+
 ## Thanks!
 
 We would like to thank [JetBrains](https://www.jetbrains.com/) for supporting the project with free licenses of their fantastic tools.