Add ext2 superblock, document file system
diff --git a/src/kernel/boot.s b/src/kernel/boot.s
index 043c42c..047b326 100644
--- a/src/kernel/boot.s
+++ b/src/kernel/boot.s
@@ -100,7 +100,7 @@
 	[extern kmain]				; C code
 
 start equ (_start)
-	
+
 _start:
 	;; First set up GDT
 	mov eax, (gdt_pointer - KERNEL_VIRTUAL_BASE)