Update 'README.md'

README.md

@@ -7,4 +7,38 @@ Currently used for downgrading EFT.
 - .net 6
 
 ## Development Stuff
-- VS 2022 w/ Avalonia VS Extension
+- VS 2022 w/ Avalonia Extension
+
+## PatchClient Parameters
+The patch client only has one parameter at this time (`autoclose`) which can be passed to the patch client like this:
+
+(this parameter is not case sensitive)
+
+`patcher.exe autoclose`
+
+- AutoClose: Whether or not the patch client should automatically close and return an exit code.
+
+## PatchGenerator Parameters
+Parameters are passed as strings like `param::value`: Example: 
+
+(parameters are not case sensitive)
+
+`"TargetFolderPath::C:\path\to\folder"`
+- OutputFolderName: The folder to save the generated patches to.
+- SourceFolderPath: The source folder for (the files expected to be patched).
+- TargetFolderPath: The target folder (the expected result of patching).
+- AutoZip: Whether or not the patch generator should automatically compress the patches after generation.
+- AutoClose: Whether or not the patch generator should automatically close and return an exit code.
+
+## Exit Codes
+```cs
+public enum PatcherExitCode
+{
+    ProgramClosed  = 0,  // program was closed by user
+    Success        = 10, // patching or patch generation succeeded
+    EftExeNotFound = 11, // EFT exe was not found during patching (patch client only)
+    NoPatchFolder  = 12, // no patch folder was found during patching (patch client only)
+    MissingFile    = 13, // a matching file could not be found during patching (patch client only) 
+    MissingDir     = 14  // a directory could not be found during patch generation (source/target/output) (patch generator only)
+}
+```