update readme

README.md

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 # lfs-scripts
 Automated script to build LFS system + livecd
+
+## This repo contain scripts to automate LFS build + livecd.
+
+#### Requirements
+
+* sudo
+* passed lfs version-check.sh
+* squashfs-tools & libisoburn (optiional to create the livecd iso)
+
+#### scripts
+
+* 01-toolchain
+  - toolchain script to build base lfs (required)
+  - this script need run as regular user
+  
+* 02-lfs-base
+  - script to build base lfs system
+  - this script need run as root
+  - extra packages is added into this base lfs, ex:
+    - dhcpcd
+    - wpa_supplicant
+    - mkinitramfs (taken from venom linux, livecd support)
+    
+* 03-mklfsiso
+  - script to build lfs livecd iso
+  - this script need run as root
+
+#### Note
+
+* If you wanna build lfs to run in your machine/virtual you need to create partition for this lfs system and mount to /mnt/lfs directory.
+* If you just wanna create the livecd iso, you can straight run these script without mount partition for lfs.
+* By default this script build the lfs system in /mnt/lfs directory, so make sure you spare this directory for it.