Update README

Author: konradmb

README.md

@@ -1 +1,22 @@
-# kp3s-marlin
+# Marlin firmware for Kingroon KP3S 3.0
+Built from source, straight from development branch
+
+## Download
+Download `robin_nano.bin` file from [Releases](https://github.com/konradmb/kp3s-marlin/releases).
+
+### Installing
+Put `robin_nano.bin` file to the root of SD card, turn on printer and wait for flashing to complete.
+You can always go back to the stock firmware by dowloading it from Kingroon website.
+
+## Features
+- No need to physically rotate screen, the rotation is set correctly in software.
+- Manual mesh bed leveling with 7x7 grid. Why buy 3D Touch when you can do the same by yourself?
+- Linear Advance
+- Pre-calibrated E-steps. I've set it to 833.7 steps/mm (factory is 768). Change it in menu if it doesn't work for you.
+- Pre-calibrated XY bed skew compensation. Change it in menu if it doesn't work for you.
+- MPC hotend temperature control (bed is still PID). Zero overshoot, maintains precise set-point compared. You can run auto-tune in menu if it doesn't work correctly.
+- Nozzle park, pause and filament change.
+- Bezier curve and arc GCode support.
+- Print most-recent file pop-up on SD card plug.
+- Plug heatsink fan to PB0 pin and get fan auto-shutdown when hotend is cool.
+- And more… (checkout config files in [/config](https://github.com/konradmb/kp3s-marlin/tree/master/config) directory)