Update LICENSE to clarify usage rights for code and game assets

LICENSE

@@ -1,21 +1,9 @@
-MIT License
+This repository contains both code and game assets (including but not limited to images, sounds, music, and fonts).
 
-Copyright (c) 2018 Robert Morse
+The source code is provided for personal, non-commercial use. You are free to compile the game and play it for personal enjoyment.
 
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
+You may not use, redistribute, or repurpose the game assets for your own projects or distribute the compiled game or its contents.
 
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
+Commercial use of any part of this repository (code or assets) is not permitted without explicit written permission from the author.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+If you're interested in using the code or assets beyond personal use, please contact the author for licensing terms.