added readme with installation instructions and usage guide

readme.txt

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+
+Brick_LuaLogic
+A high-performance digital logic simulation frontend for Blockland
+by Eagle517 and Redo
+
+How to Install:
+
+	1. Install this add-on to Blockland.
+	2. Install the required add-on Print_Logic_Default - https://gitlab.com/Eagle517/Print_Logic_Default
+	3. Download Lua backend - https://gitlab.com/Eagle517/lua-logic
+	4. Install LuaPower - https://luapower.com/
+		Add luapower-all-master/bin/mingw64 to Path
+
+How to Use:
+	1. Start Blockland server
+	2. Run Lua backend using StartBackend.bat
+	3. Enter llc(); in Blockland server console to connect to the backend.
+		If all goes well, the Lua console should show "Connection from 127.0.0.1:25000", and the Blockland console should show "LuaLogic -> tcp connected".
+
+Commands:
+	/lt - Toggle the logic updates on or off
+	/lst (timeMS) - Set the logic tick time in milliseconds - This is the propagation delay through a single gate. If set to 0, it will run as fast as possible while still being deterministic.
+	/ls - Force a logic tick when updates are disabled - useful for debugging circuits and observing timing
+	/lfx - Toggle brick FX updates on or off - useful for reducing ghosting when operating large circuits
+	/lfxt (timeMS) - Set the logic FX update time in milliseconds - this is how often the logic backend sends FX updates to the game. Increase to reduce ghosting, decrease for better visualization. Setting to 0 not recommended.
+	/ltr - Toggle bottom-print display showing the actual logic tick rate
+	/li - View information about the number of logic bricks currently on the server