Update README.md

update usage.

README.md

@@ -1,2 +1,12 @@
 # Magisk_Disable_ALL_Modules
 Provide a Magisk zip to Disable your all modules when you can`t boot your phone because of some wrong modules.
+
+## How to Use it 
+1. make sure that you have a phone which can boot normal. so you can use Magisk Manager patch a boot.img in your phone. 
+2. open latest Magisk Manager setting and click the Update Channel-Custom Channel, fill in the link below. 
+    ```` https://raw.githubusercontent.com/Oosl/Magisk_Disable_ALL_Modules/master/debug.json ````
+3. go back and click install Magisk, chose NEXT to skip first Option, second Method chose the `Select and Patch a File` option.
+4. flash Magisk_patched.img that you get by fastboot.
+
+## Attention
+this version just be verified in latest (Canary) Magisk.