chore: add MIT License

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2018 Mahdi Dibaiee
+
+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:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+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.

README.md

@@ -5,6 +5,8 @@ Simple, fast-paced snake game with extra fun!
 
 There are a few *magic balls* 🔮 in this game, each with a unique ability to increase the variety in the game!
 
+Download the APK here: [super-snake.apk](https://github.com/mdibaiee/super-snake/releases/download/1.0.0/super-snake.apk)
+
 ![about](images/about.png)
 ![magics](images/magics.png)
 ![points](images/points.png)