Update README.md

Added instructions to build your own ISO

README.md

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 # Windows Pocket Edition
-Windows PE based DOS
+Windows PE based DOS-like interface
 Made with Batch
 
 Note: Still in Alpha stages
 
 JOIN THE KERNEL BROTHERS DISCORD: https://discord.gg/ZPhV9kT3gq
 
+# How to build your own WPE ISO
+
+1) Download os_wpe.bat from the code
+2) Get your Windows Preinstallation Environment ISO
+3) Download and install AnyBurn: https://www.anyburn.com/download.php
+4) Extract boot.wim from the ISO (In the sources folder)
+5) Use 7z or any other archive viewer to open boot.wim
+6) Navigate to Windows/System32
+7) Drag and drop os_wpe.bat to System32
+8) Close the boot.wim
+9) Launch AnyBurn and select 'Edit Image File' from the main menu
+10) Insert the ISO
+11) On the left panel, navigate to Sources
+12) Drag and drop the edited boot.wim to the right panel
+13) Select Yes to All if it asks to replace files
+14) Click Next and follow the steps to complete the ISO
+
+NOTE: Some features (Like custom apps) may not be available.
+
+
 Windows Pocket Edition - Version Alpha 0.0.3 (Build: A7) - Made by The Kernel Brothers
 
 Windows Pocket Edition Standalone - Version Alpha 0.0.3 (Build: A7) - Made by The Kernel Brothers