Update installation instructions

docs/installation.md

@@ -1,15 +1,27 @@
 # Installation
+
+## Install Latest .NET SDK
+You can get the typical SDK installation from Microsoft's official page
+
+[:octicons-arrow-right-24: Download SDK](https://dotnet.microsoft.com/download)
+
+!!! tip "Restart"
+    It's usually a good idea to restart your computer after installing DotNet SDK to help things settle in.
+
+This step is needed by the "engine" in order to download the Spriggit translation packages via `dotnet tool install`.  [More info here](translation-packages.md).
+
+## Download Spriggit Exe
 Spriggit comes as a UI and a Command Line Interface.   Both can be downloaded from the github releases page
 
 [:octicons-arrow-right-24: Download](https://github.com/Mutagen-Modding/Spriggit/releases)
 
-## Spriggit UI
+### Spriggit UI
 This is a self-contained WPF application, which can only run on Windows.  You can add links between a mod file and where it should be translated to, and then sync back and forth with one click.
 
 ![Spriggit UI](images/spriggit-ui-1.png)
 ![Spriggit UI](images/spriggit-ui-2.png)
 
-## Spriggit CLI
+### Spriggit CLI
 Spriggit comes with a Command Line Interface that can be used to convert from Betheseda Plugins to Git Repositories, and back.   
 
 !!! tip "UI Can Also Run as a CLI"