Update README.md

Author: lgund

README.md

@@ -12,4 +12,8 @@ The Steam Installer by First-Coder is a console application to install the Steam
 
 This tool uses dotnet 6 and can just be started. It´s a single .exe file and don't need any instructions. This tool can also be used on dotnet 3+. It´s just a part of a bigger project and therefoce it´s build in dotnet 6.
 
+## Screenshots
+
+![SteamInstaller](https://user-images.githubusercontent.com/13957661/112702697-b2bd8180-8e94-11eb-999b-f32fe51882c8.png)
+
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