Add mesg to README

README

@@ -6,11 +6,51 @@ much simpler.
 
 The following programs are currently implemented:
 
-    chvt clear ctrlaltdel dd df dmesg eject fallocate free freeramdisk
-    fsfreeze getty halt  hwclock id insmod killall5  login lsmod lsusb
-    mknod mkswap mount mountpoint  pagesize passwd pidof pivot_root ps
-    readahead respawn rmmod stat  su swapoff swapon switch_root sysctl
-    truncate umount unshare uptime watch who
+chvt
+clear
+ctrlaltdel
+dd
+df
+dmesg
+eject
+fallocate
+free
+freeramdisk
+fsfreeze
+getty
+halt
+hwclock
+id
+insmod
+killall5
+login
+lsmod
+lsusb
+mesg
+mknod
+mkswap
+mount
+mountpoint
+pagesize
+passwd
+pidof
+pivot_root
+ps
+readahead
+respawn
+rmmod
+stat
+su
+swapoff
+swapon
+switch_root
+sysctl
+truncate
+umount
+unshare
+uptime
+watch
+who
 
 The complement  of ubase  is sbase[1] which  mostly follows  POSIX and
 provides all the portable tools.  Together they are intended to form a