Update README and LICENCE.

Author: paulbartrum

LICENSE.txt

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) [year] [fullname]
+Copyright (c) 2024 Paul Bartrum
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

ProgressBar.cs

@@ -1,6 +1,6 @@
 using System.Text;
 
-// https://gist.github.com/DanielSWolf/0ab6a96899cc5377bf54
+// Sourced from https://gist.github.com/DanielSWolf/0ab6a96899cc5377bf54
 // Code is under the MIT License: http://opensource.org/licenses/MIT
 
 /// <summary>

README.md

@@ -1 +1,21 @@
-# UnityPackageExtractor
+# Unity Package Extractor
+
+Extracts the contents of a Unity package file (.unitypackage).
+
+I found that [existing python tool](https://github.com/Cobertos/unitypackage_extractor) for this task couldn't
+handle large package files in a reasonable time. This tool should be able to quickly handle packages of essentially unlimited size
+(caveat: I've only tested up to 8GB).
+
+## Requirements
+
+The release binary is Windows 10+, 64-bit only. (Other platforms should work if you compile from source.)
+
+## Usage
+
+* Download [UnityPackageExtractor.zip](/paulbartrum/UnityPackageExtractor/releases/latest) from the Releases tab.
+* Extract into a new directory
+* Drag and drop your `.unitypackage` onto `UnityPackageExtractor.exe` (this will output into the same directory as your package file) OR
+* Run from the command line with `UnityPackageExtractor.exe [path/to/your/package.unitypackage] (optional/output/path)`
+
+Note: Unity packages should first be downloaded using the package manager inside Unity.
+The .unitypackage file should then be available under the package cache directory (which as of this writing is: `%APPDATA%\Roaming\Unity\Asset Store-5.x`).