Add installation and override instructions to README

Author: tdg5

README.md

@@ -2,6 +2,27 @@
 
 Library for enforcing my preferred conventions in C#.
 
+## Installation
+
+The easiest way to install this package is to add a line something like the
+following to your `.csproj` file:
+
+```xml
+<PackageReference Include="Tdg5.StandardConventions" PrivateAssets="all" Version="0.0.2" />
+```
+
+It's important that you include `PrivateAssets="all"` to avoid including
+analyzers and other development packages in your run-time builds.
+
+
+## Overriding configurations
+
+Since this project provides global configurations, most configurations can be
+overridden by adding a `.editorconfig` file to your project with your desired
+overrides. Learn more here: [Configuration files for code analysis
+rules](https://learn.microsoft.com/en-us/dotnet/fundamentals/code-analysis/configuration-files).
+
+
 ## Running Tests
 
 Test are run against packed versions of the library. Because of this, NuGet