Update documentation

Il2CppInterop.Pdb.Generator/Program.cs

@@ -8,7 +8,7 @@ public static void Main(string[] args)
     {
         if (args.Length <= 1)
         {
-            Console.WriteLine($"Usage: UnhollowerPdbGen.exe <path to GameAssembly.dll> <path to {MethodAddressToTokenMap.FileName}>");
+            Console.WriteLine($"Usage: Il2CppInterop.Pdb.Generator.exe <path to GameAssembly.dll> <path to {MethodAddressToTokenMap.FileName}>");
         }
         var rootPath = Path.GetDirectoryName(args[0])!;
         var map = new MethodAddressToTokenMap(args[1]);

Il2CppInterop.Pdb.Generator/README.md

@@ -0,0 +1,17 @@
+# PDB generator
+
+This is an executable that can be ran to generate a Microsoft PDB file (debug symbols) for GameAssembly.dll based on unhollower-generated names.
+
+This can be useful for analyzing code of obfuscated games. For unobfuscated games, using [Il2CppInspector](https://github.com/djkaty/Il2CppInspector) might provide better results for code analysis.
+
+Generated PDBs were tested with windbg, lldb, WPA viewer/ETL performance analysis and IDA.
+
+Generated PDBs only include generated methods, and don't include type info, generic method info and IL2CPP internals.
+
+You need to manually copy the following Microsoft-provided libraries from Visual Studio (or other build tools) for this to work. They cannot be redistributed because the license on them is not clear.
+
+ * `mspdbcore.dll`
+ * `msobj140.dll`
+ * `tbbmalloc.dll`
+
+These need to be placed next to the built executable file. Use file search to find `mspdbcore` in the Visual Studio install directory. By default, they are in `C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\`.