Update README.md

Author: HotNoob

README.md

@@ -13,15 +13,17 @@ APPEND    iso raw
 1.  Download TinyCore Iso
 2.  Install Requirements
 3.  Edit config.php
-4.  run php script
+4.  Edit extensions.txt
+5.  Edit Files
+6.  run php script
     ```
     php -f build-tinycore.php
     ```
     or to specify arch. currently only x86 works. 
     ```
     php -f build-tinycore.php x86_64
     ```
-5. Enjoy
+7. Enjoy