Add super cheap build instructions

LCDonald/LCDonald.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 	<PropertyGroup>
 		<OutputType>WinExe</OutputType>
 		<TargetFramework>net6.0</TargetFramework>
@@ -13,7 +13,7 @@
 		<UseAppHost>true</UseAppHost>
 	</PropertyGroup>
 	<PropertyGroup>
-		<CFBundleName>Sonic McDorigins</CFBundleName>
+		<CFBundleName>Sonic McOrigins</CFBundleName>
 		<!-- Also defines .app file name -->
 		<CFBundleDisplayName>Sonic McOrigins</CFBundleDisplayName>
 		<CFBundleIdentifier>com.tvc16.lcdonald</CFBundleIdentifier>

README.md

@@ -18,4 +18,19 @@ Feel free to look at the [issues](https://github.com/Difegue/LCDonald/issues) if
 * Uses the well-known [MAMELayout](https://docs.mamedev.org/techspecs/layout_files.html) format for screen positioning
 * [AvaloniaUI](http://avaloniaui.net/)-based frontend, runs on Windows/Mac/Linux -- Backend is pure .NET and can run on (mostly)anything!
 
-All scanned/photographied materials in this repository are ©️SEGA, 2004/2005/2006.
+All scanned/photographied materials in this repository are ©️SEGA, 2004/2005/2006.  
+
+## Build instructions 
+
+
+```
+# Windows
+cd LCDonald && dotnet publish .\LCDonald.csproj -c release -r win-x64
+
+# Linux
+cd LCDonald && dotnet publish .\LCDonald.csproj -c release -r linux-x64
+
+# macOS
+cd LCDonald && dotnet msbuild -t:BundleApp -p:RuntimeIdentifier=osx-x64 -property:Configuration=Release
+
+```