Update README.md

Author: Gezine

README.md

@@ -1,4 +1,28 @@
 # ArtemisLuaLoader
-Run arbitary lua script from savedata
 
-Test
+Artemis is a cross-platform Visual Novel game engine that utilizes Lua script.
+Windows / Android / iOS / Web / Nintendo Switch / Playstation are supported.
+
+Most of Artemis games automatically load save9999.dat file when game boots.
+By loading an edited save file, we can chain-load custom scripts from the save folder.
+
+Game boots -> load savefile "save9999.dat" -> load iet script "inject.iet" -> load lua script "inject.lua"
+
+This has been tested on Windows and PS4.
+Pretty sure it will work on other platforms too.
+
+This repo currently contains custom save file for PS4 game CUSA16074 (Raspberry Cube).
+I chose this game because it was the easiest physical disc that I could obtain.
+
+There are other physcial disc games that uses Artemis such as CUSA27389 (ハミダシクリエイティブ) and CUSA13303 (ノラと皇女と野良猫ハート HD).
+
+If you have access to PS store you can just buy the trial version to test it.
+https://store.playstation.com/ja-jp/product/JP2551-CUSA27390_00-HAMIDASHITR00001/
+
+You might have to create custom save9999.dat file for each game.
+
+On Windows, you have access to luasocket and os.execute.
+However, on PS4, you have limited access. (Check comments)
+
+I will not explain how to copy PS4 save files to console.
+Google this yourself.