Update README.md

Author: tytydraco

README.md

@@ -1,2 +1,10 @@
-# patching
+# Patching
 Patch your own Magisk Module APK for third-party repo support.
+
+# Tutorial
+1. Clone [mmpatch](https://github.com/tytydraco/mmpatch) to your computer.
+2. Install [Apktool](https://github.com/iBotPeaches/Apktool) and Java JDK.
+3. Add Apktool and Java SDK bin to your path.
+4. `./mmpatch Magisk-Modules-Alt-Repo`
+5. Delete any existing Magisk Manager from your Android device.
+6. Install `mmpatch-signed.apk` to your Android Device.